Latitude & Longitude string to number through type cast
In my application i am saving the data ( 78°20.54 E )coming from gps in tdms format in the pc.
There are many such strings to save , so as this takes more memory to save the data in pc i want to type case in floating and save .
I am typecasting But i am not able to retrive the same data 78°20.54 E while again type casting .
Please see the attached vi.
Regards
Naga
Attachments:
TYPE CAST.vi 8 KB
Nagaa,
You might want to better explain exactly what you want.
Do you want "78°20.54" to be 78.3423 (I'm assuming after the ° is minutes)? Then have E be positive and W be negative?
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines
Similar Messages
-
How to use type cast change string to number(dbl)?can it work?
how to use type cast change string to number(dbl)?can it work?
Do you want to Type Cast (function in the Advanced >> Data Manipulation palette) or Convert (functions in the String >> String/Number Conversion palette)?
2 simple examples:
"1" cast as I8 = 49 or 31 hex.
"1" converted to decimal = 1.
"20" cast as I16 = 12848 or 3230 hex.
"20" converted to decimal = 20.
Note that type casting a string to an integer results in a byte by byte conversion to the ASCII values.
32 hex is an ASCII "2" and 30 hex is an ASCII "0" so "20" cast as I16 becomes 3230 hex.
When type casting a string to a double, the string must conform the the IEEE 32 bit floating point representation, which is typically not easy to enter from the keyboard.
See tha attached LabView 6.1 example.
Attachments:
TypeCastAndConvert.vi 34 KB -
Splitting and type casting huge string into arrays
Hello,
I'm developing an application which is supposed to read measurement files. Files contain I16 and SGL data which is type casted into string. I16 data is data from analog input and SGL is from CAN-bus data in channel form. CAN and analog data is recorded using same scan rate.
For example, if we have 6 analog channels and 2 CAN channels string will be (A represents analog and C represents CAN):
A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 A3 A4 A5 A6 C1 C2 A1 A2 .... and so on
Anyway, I have problems reading this data fast enough into arrays. Most obvious solution to me was to use shift registers and split string in for loop. I created a for loop with two inner for loops. Number of scans to read from string is wired to N terminal of the outermost loop. Shift register is initialized with string read from file.
First of the inner loops reads analog input data. Number of analog channels is wired to its N terminal. It's using split string to read 2 bytes at a time and then type casts data to I16. Rest of the string is wired to shift register. When every I16 channel from scan is read, rest of the string is passed to shift register of the second for loop.
Second loop is for reading CAN channels. It's similar to first loop except data is read 4 bytes at a time and type casted to SGL. When every CAN channel from scan is read, rest of the string is passed to shift register of the outermost loop. Outputs of type cast functions are tunneled out of loops to produce 2D arrays.
This way reading about 500 KB of data can take for example tens of seconds depending on PC and number of channels. That's way too long as we want to read several megabytes at a time.
I created also an example with one inner loop and all data is type casted to I16. That is extremely fast when compared to two inner loops!
Then I also made a test with two inner loops where I replaced shift register and split string with string subset. That's also faster than two inner loops + shift register, but still not fast enough. Any improvement ideas are highly appreciated. Shift register example attached (LV 7.1)
Thanks in advance,
Jakke Palonen
Attachments:
String to I16 and SGL arrays.vi 39 KBOK, there is clearly room for improvement. I did some timing and my two above suggestions are already about 100x faster than yours. A few teeaks led to a version that is now over 500x faster than the original code.
A few timings on my rather slow computer (1GHz PIII Laptop) are shown on the front panel. For example with 10000 scans (~160kB data as 6+2) my new fastest version (Reshape II) takes 14 ms versus the original 7200ms! It can do 100000 scans (1.6MB data) in under 200 ms and 1000000 scans (15MB data) in under 2 seconds.
I am sure the code could be further improved. I recommend the Reshape II algoritm. It is fastest and can deal with variable channel counts. Modify as needed.
Attached is a LabVIEW 7.1 version of the benchmarking code, containing all algorithms. I have verified that all algorithms produce the same result (with the limitation that the cluster version only works for 6*I16+2*SGL data, of course). Remember that the reshape function is extremely efficient, because it does not move the data in memory. I have some ideas for further improvements, but this should get you going.
Message Edited by altenbach on 08-05-2005 03:06 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
StringI16SGLCastingTimer.png 48 KB
StringtoI16andSGLArraysMODTimer.vi 120 KB -
Is there a way to type cast an array of strings to numbers and back again?
I'm working on an application where I want to type cast a string like "power supply" into an array of existing numbers. Then sort the existing numbers, and finally convert the casted numbers back into a string so it can be read by the user. In the attachment, you can see my latest attempt with flatten/unflatten data and the 'convert string to byte array'. I can't seem to make this work. Any ideas?
Thanks - Paul
Attachments:
Paul's Temp scan for components.vi 56 KBOK, here's a quickie (LabVIEW 7.0).
Simply get the sort key from the 1D array, then build the table.
Message Edited by altenbach on 10-27-2006 01:34 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
SortedTable.png 4 KB
SortedTable.vi 37 KB -
Access of possibly undefined property number through a reference with static type...
Hello everyone !
I run into this problem today ... take a look on the code :
import com.trick7.effects.TeraFire;
for (var j:uint=0; j<10; j++) {
var fire:TeraFire = new TeraFire();
fire.x = j * 40 + 20;
fire.y = 100;
fire.number = j; //This line is causeing the problem
addChild(fire);
fire.buttonMode = true;
TeraFire class creates fire particles. The compiler error is :
Scene 1, Layer 'Layer 1', Frame 1, Line 7
1119: Access of possibly undefined property number through a reference with static type com.trick7.effects:TeraFire.
Anyone can help me to find a solution to this problem.
I can do that ".number" with a movieclip but not in this case. What can I do ?I borrowed that class from the internet.
I made the changes you suggested: imported flash.Display.MovieClip and also made the class extend MovieClip.
The error is still throwing in compiler errors. I am not really good enough to edit this class because there are some functions I don't still understand very good. This is the class below:
package com.trick7.effects{
import flash.display.BitmapData;
import flash.display.GradientType;
import flash.display.MovieClip;
import flash.events.Event;
import flash.filters.DisplacementMapFilter;
import flash.filters.DisplacementMapFilterMode;
import flash.geom.Matrix;
import flash.geom.Point;
import flash.geom.Rectangle;
public class TeraFire extends MovieClip{
public var phaseRateX:Number;
public var phaseRateY:Number;
private var offsets:Array= [new Point(),new Point()];
private var seed:Number = Math.random();
private var fireW:Number;
private var fireH:Number;
//火の色
//private var fireColorIn:uint;
//private var fireColorOut:uint;
private var ball:Sprite;
private var gradientImage:BitmapData;
private var displaceImage:BitmapData;
private var focalPointRatio:Number = 0.6;
private const margin:int = 10;
private var rdm:Number;
public function TeraFire(xPos:Number=0, yPos:Number=0, fireWidth:Number=30, fireHeight:Number=90, fireColorIn:uint = 0xFFCC00,fireColorOut:uint = 0xE22D09){
fireW = fireWidth;
fireH = fireHeight;
phaseRateX = 0;
phaseRateY = 5;
var matrix:Matrix = new Matrix();
matrix.createGradientBox(fireW,fireH,Math.PI/2,-fireW/2,-fireH*(focalPointRatio+1)/2);
var colors:Array = [fireColorIn, fireColorOut, fireColorOut];
var alphas:Array = [1,1,0];
var ratios:Array = [30, 100, 220];
var home:Sprite = new Sprite();
ball = new Sprite();
ball.graphics.beginGradientFill(GradientType.RADIAL,colors, alphas, ratios, matrix,"pad","rgb",focalPointRatio);
ball.graphics.drawEllipse(-fireW/2,-fireH*(focalPointRatio+1)/2,fireW,fireH);
ball.graphics.endFill();
//余白確保用透明矩形
ball.graphics.beginFill(0x000000,0);
ball.graphics.drawRect(-fireW/2,0,fireW+margin,1);
ball.graphics.endFill();
addChild(home);
home.addChild(ball);
this.x = xPos;
this.y = yPos;
addEventListener(Event.ENTER_FRAME,loop);
displaceImage = new BitmapData(fireW+margin,fireH,false,0xFFFFFFFF);
var matrix2:Matrix = new Matrix();
matrix2.createGradientBox(fireW+margin,fireH,Math.PI/2,0,0);
var gradient_mc:Sprite = new Sprite;
gradient_mc.graphics.beginGradientFill(GradientType.LINEAR,[0x666666,0x666666], [0,1], [120,220], matrix2);
gradient_mc.graphics.drawRect(0,0,fireW+margin,fireH);//drawのターゲットなので生成位置にこだわる必要はない。
gradient_mc.graphics.endFill();
gradientImage = new BitmapData(fireW+margin,fireH,true,0x00FFFFFF);
gradientImage.draw(gradient_mc);//gradient_mcを消す必要は？
rdm = Math.floor(Math.random()*10);
private function loop(e:Event):void{
for(var i:int = 0; i < 2; ++i){
offsets[i].x += phaseRateX;
offsets[i].y += phaseRateY;
displaceImage.perlinNoise(30+rdm, 60+rdm, 2, seed, false, false, 7, true, offsets);
displaceImage.copyPixels(gradientImage,gradientImage.rect,new Point(),null, null, true);
var dMap:DisplacementMapFilter = new DisplacementMapFilter(displaceImage, new Point(), 1, 1, 20, 10, DisplacementMapFilterMode.CLAMP);
ball.filters = [dMap];
I you can clarify a little bit further I would appreciate it a lot because I wasted some good time on this. -
Type cast with String representation
I have a hashtable full of Objects along with a String representation of their type. Is it possible to cast an Object back using a String representation of its type. ie
String str = "helpme";
String type = "String";
str = (Object)str;
now I want to get str back to String type but with using the variable type.Do not crosspost: http://forum.java.sun.com/thread.jsp?thread=355714&forum=4&message=1482427
-
I have written the following anonymous block. It has a cursor "cur_total_tckt" which select 6 columns. A nested table "total_tckt_colcn" is declared of type "cur_total_tckt". In the dbms_output.put_line I want to print each element of my collection. It is giving me the following error :
PLS-00306: wrong number or types of arguments in call to 'PUT_LINE'
ORA-06550: line 29, column 2:
PL/SQL: Statement ignored
06550. 00000 - "line %s, column %s:\n%s"
I want to print all the 6 columns of an element for 366 such elements.
DECLARE
CURSOR cur_total_tckt
is
select t.ticket_id ticket_id, t.created_date created_date, t.created_by created_by, t.ticket_status ticket_status,
t.last_changed last_changed, h.created_date closed_date
from n01.cc_ticket_info t
inner join n01.cc_ticket_status_history h
on (t.ticket_id = h.ticket_id)
where t.last_changed >= '6/28/2012 17:28:59' and t.last_changed < (sysdate + interval '1' day);
type total_tckt_colcn
is
TABLE OF cur_total_tckt%rowtype;
total_tckt_col total_tckt_colcn;
total_coach_col total_tckt_colcn;
begin
total_tckt_col := total_tckt_colcn ();
total_coach_col := total_tckt_colcn ();
OPEN cur_total_tckt;
loop
fetch cur_total_tckt bulk collect into total_tckt_col limit 100;
dbms_output.put_line(total_tckt_col.last);
FOR i IN total_tckt_col.first..total_tckt_col.last
loop
-- dbms_output.put_line(total_tckt_col(i).ticket_id); -- this line works
dbms_output.put_line(total_tckt_col(i)); -- this line gives error
END LOOP;
exit
WHEN (cur_total_tckt%NOTFOUND);
END LOOP ;
CLOSE cur_total_tckt;
end;No, it wont allow to display two values ,
Other wise we can do ,to display two values by giving separately DBMS_output as shown below.it wont give u ia single row , it will give in row by row.
DECLARE
CURSOR cur_total_tckt
IS
SELECT empno, ename FROM emp;
TYPE total_tckt_colcn IS TABLE OF cur_total_tckt%ROWTYPE;
total_tckt_col total_tckt_colcn;
total_coach_col total_tckt_colcn;
BEGIN
total_tckt_col := total_tckt_colcn ();
total_coach_col := total_tckt_colcn ();
OPEN cur_total_tckt;
LOOP
FETCH cur_total_tckt BULK COLLECT INTO total_tckt_col LIMIT 100;
DBMS_OUTPUT.put_line (total_tckt_col.LAST);
FOR i IN total_tckt_col.FIRST .. total_tckt_col.LAST
LOOP
DBMS_OUTPUT.put_line (total_tckt_col (i).empno);
DBMS_OUTPUT.put_line (total_tckt_col (i).ename);
END LOOP;
EXIT WHEN (cur_total_tckt%NOTFOUND);
END LOOP;
CLOSE cur_total_tckt;
END;
Out put:
12
1236
kenny
2
jhon
1
menies
3
sony
4
endy
5
dennies
1
wolks
2
flora
3
teady
4
furry
5
kune
6
zoel
Cheers! -
Pl. help debug - PLS-00306: wrong number or types of arguments in call
Hi,
I am trying to create a wrapper function to all a procedure in Oracle EBusiness Suite 11i.
When I compile the following code
==========
CREATE OR REPLACE PROCEDURE gme.KIL_ProcessAlloc IS
vFileName VARCHAR2(30) := '1006251.csv';
vLoc VARCHAR2(20) := '/u041/applmgr/opm/opmappl/utllog';
v_InHandle utl_file.file_type;
vNewLine VARCHAR2(1000);
vLineNo PLS_INTEGER;
c1 PLS_INTEGER;
c2 PLS_INTEGER;
c3 PLS_INTEGER;
c4 PLS_INTEGER;
c5 PLS_INTEGER;
c6 PLS_INTEGER;
c7 PLS_INTEGER;
c8 PLS_INTEGER;
c9 PLS_INTEGER;
c10 PLS_INTEGER;
c11 PLS_INTEGER;
c12 PLS_INTEGER;
c13 PLS_INTEGER;
c14 PLS_INTEGER;
c15 PLS_INTEGER;
c16 PLS_INTEGER;
c17 PLS_INTEGER;
c18 PLS_INTEGER;
c19 PLS_INTEGER;
c20 PLS_INTEGER;
c21 PLS_INTEGER;
c22 PLS_INTEGER;
c23 PLS_INTEGER;
c24 PLS_INTEGER;
c25 PLS_INTEGER;
c26 PLS_INTEGER;
c27 PLS_INTEGER;
c28 PLS_INTEGER;
c29 PLS_INTEGER;
c30 PLS_INTEGER;
c31 PLS_INTEGER;
c32 PLS_INTEGER;
c33 PLS_INTEGER;
c34 PLS_INTEGER;
TYPE AllocArray IS TABLE OF GME_INVENTORY_TXNS_GTMP%ROWTYPE
INDEX BY BINARY_INTEGER;
l_Allocdata AllocArray;
TYPE MtlDetailArray IS TABLE OF gme_material_details%ROWTYPE
INDEX BY BINARY_INTEGER;
l_MtlDetaildata MtlDetailArray;
TYPE xTranArray IS TABLE OF GME_INVENTORY_TXNS_GTMP%ROWTYPE
INDEX BY BINARY_INTEGER;
l_xtrandata xTranArray;
TYPE defTranArray IS TABLE OF GME_INVENTORY_TXNS_GTMP%ROWTYPE
INDEX BY BINARY_INTEGER;
l_deftrandata defTranArray;
t_messagecount number;
t_messagelist varchar2(10000);
t_returnstatus varchar2(1);
BEGIN
v_InHandle := utl_file.fopen(vLoc, vFileName, 'r');
vLineNo := 1;
LOOP
BEGIN
utl_file.get_line(v_InHandle, vNewLine);
EXCEPTION
WHEN NO_DATA_FOUND THEN
EXIT;
END;
vNewLine := TRANSLATE(vNewLine, 'A''', 'A');
c1 := INSTR(vNewLine, ',', 1,1);
c2 := INSTR(vNewLine, ',', 1,2);
c3 := INSTR(vNewLine, ',', 1,3);
c4 := INSTR(vNewLine, ',', 1,4);
c5 := INSTR(vNewLine, ',', 1,5);
c6 := INSTR(vNewLine, ',', 1,6);
c7 := INSTR(vNewLine, ',', 1,7);
c8 := INSTR(vNewLine, ',', 1,8);
c9 := INSTR(vNewLine, ',', 1,9);
c10 := INSTR(vNewLine, ',', 1,10);
c11 := INSTR(vNewLine, ',', 1,11);
c12 := INSTR(vNewLine, ',', 1,12);
c13 := INSTR(vNewLine, ',', 1,13);
c14 := INSTR(vNewLine, ',', 1,14);
c15 := INSTR(vNewLine, ',', 1,15);
c16 := INSTR(vNewLine, ',', 1,16);
c17 := INSTR(vNewLine, ',', 1,17);
c18 := INSTR(vNewLine, ',', 1,18);
c19 := INSTR(vNewLine, ',', 1,19);
c20 := INSTR(vNewLine, ',', 1,20);
c21 := INSTR(vNewLine, ',', 1,21);
c22 := INSTR(vNewLine, ',', 1,22);
c23 := INSTR(vNewLine, ',', 1,23);
c24 := INSTR(vNewLine, ',', 1,24);
c25 := INSTR(vNewLine, ',', 1,25);
c26 := INSTR(vNewLine, ',', 1,26);
c27 := INSTR(vNewLine, ',', 1,27);
c28 := INSTR(vNewLine, ',', 1,28);
c29 := INSTR(vNewLine, ',', 1,29);
c30 := INSTR(vNewLine, ',', 1,30);
c31 := INSTR(vNewLine, ',', 1,31);
c32 := INSTR(vNewLine, ',', 1,32);
c33 := INSTR(vNewLine, ',', 1,33);
c34 := INSTR(vNewLine, ',', 1,34);
-- l_allocdata(vLineNo).sourceno := SUBSTR(vNewLine,1,c1-1);
-- l_allocdata(vLineNo).sizeno := SUBSTR(vNewLine,c1+1,c2-c1-1);
-- l_allocdata(vLineNo).status := SUBSTR(vNewLine,c2+1,c3-c2-1);
-- l_allocdata(vLineNo).latitude := SUBSTR(vNewLine,c3+1,c4-c3-1);
-- l_allocdata(vLineNo).longitude := SUBSTR(vNewLine,c4+1,c5-c4-1);
-- l_allocdata(vLineNo).testfor := SUBSTR(vNewLine,c5+1);
l_allocdata(vLineNo).trans_id := SUBSTR(vNewLine,1,c1-1);
l_allocdata(vLineNo).item_id := SUBSTR(vNewLine,c1+1,c2-c1-1);
l_allocdata(vLineNo).co_code := SUBSTR(vNewLine,c2+1,c3-c2-1);
l_allocdata(vLineNo).orgn_code := SUBSTR(vNewLine,c3+1,c4-c3-1);
l_allocdata(vLineNo).whse_code := SUBSTR(vNewLine,c4+1,c5-c4-1);
l_allocdata(vLineNo).lot_id := SUBSTR(vNewLine,c5+1,c6-c5-1);
l_allocdata(vLineNo).location := SUBSTR(vNewLine,c6+1,c7-c6-1);
l_allocdata(vLineNo).doc_id := SUBSTR(vNewLine,c7+1,c8-c7-1);
l_allocdata(vLineNo).doc_type := SUBSTR(vNewLine,c8+1,c9-c8-1);
l_allocdata(vLineNo).doc_line := SUBSTR(vNewLine,c9+1,c10-c9-1);
l_allocdata(vLineNo).line_type := SUBSTR(vNewLine,c10+1,c11-c10-1);
l_allocdata(vLineNo).reason_code := SUBSTR(vNewLine,c11+1,c12-c11-1);
l_allocdata(vLineNo).trans_date := SUBSTR(vNewLine,c12+1,c13-c12-1);
l_allocdata(vLineNo).trans_qty := SUBSTR(vNewLine,c13+1,c14-c13-1);
l_allocdata(vLineNo).trans_qty2 := SUBSTR(vNewLine,c14+1,c15-c14-1);
l_allocdata(vLineNo).qc_grade := SUBSTR(vNewLine,c15+1,c16-c15-1);
l_allocdata(vLineNo).lot_status := SUBSTR(vNewLine,c16+1,c17-c16-1);
l_allocdata(vLineNo).trans_stat := SUBSTR(vNewLine,c17+1,c18-c17-1);
l_allocdata(vLineNo).trans_um := SUBSTR(vNewLine,c18+1,c19-c18-1);
l_allocdata(vLineNo).trans_um2 := SUBSTR(vNewLine,c19+1,c20-c19-1);
l_allocdata(vLineNo).completed_ind := SUBSTR(vNewLine,c20+1,c21-c20-1);
l_allocdata(vLineNo).staged_ind := SUBSTR(vNewLine,c21+1,c22-c21-1);
l_allocdata(vLineNo).gl_posted_ind := SUBSTR(vNewLine,c22+1,c23-c22-1);
l_allocdata(vLineNo).event_id := SUBSTR(vNewLine,c23+1,c24-c23-1);
l_allocdata(vLineNo).text_code := SUBSTR(vNewLine,c24+1,c25-c24-1);
l_allocdata(vLineNo).transaction_no := SUBSTR(vNewLine,c25+1,c26-c25-1);
l_allocdata(vLineNo).action_code := SUBSTR(vNewLine,c26+1,c27-c26-1);
l_allocdata(vLineNo).material_detail_id := SUBSTR(vNewLine,c27+1,c28-c27-1);
l_allocdata(vLineNo).organization_id := SUBSTR(vNewLine,c28+1,c29-c28-1);
l_allocdata(vLineNo).locator_id := SUBSTR(vNewLine,c29+1,c30-c29-1);
l_allocdata(vLineNo).subinventory := SUBSTR(vNewLine,c30+1,c31-c30-1);
l_allocdata(vLineNo).alloc_um := SUBSTR(vNewLine,c31+1,c32-c31-1);
l_allocdata(vLineNo).alloc_qty := SUBSTR(vNewLine,c32+1,c33-c32-1);
l_allocdata(vLineNo).def_trans_ind := SUBSTR(vNewLine,c33+1,c34-c33-1);
vLineNo := vLineNo+1;
END LOOP;
utl_file.fclose(v_InHandle);
FOR i IN 1..vLineNo-1 loop
GME_API_PUB.insert_line_allocation (
1,
100,
FALSE,
True,
l_allocdata(i),
null,
null,
false,
false,
false,
l_MtlDetailData,
l_xtrandata,
l_deftrandata,
t_messagecount,
t_messagelist,
t_returnstatus);
end loop;
IF (t_returnstatus <> 'S') THEN
for i IN 1 .. t_messagecount LOOP
dbms_output.put_line('The text is '||FND_MSG_PUB.get(i,t_messagelist));
END LOOP;
END IF;
-- COMMIT;
EXCEPTION
WHEN OTHERS THEN
RAISE;
END KIL_ProcessAlloc;
===============
I get this
Warning: Procedure created with compilation errors.
SQL> sho err
Errors for PROCEDURE GME.KIL_PROCESSALLOC:
LINE/COL ERROR
145/8 PLS-00306: wrong number or types of arguments in call to
'INSERT_LINE_ALLOCATION'
145/8 PL/SQL: Statement ignored
=================
The package specs of GME_API_PU is under:
===============
PROCEDURE insert_line_allocation (
p_api_version IN NUMBER := gme_api_pub.api_version
,p_validation_level IN NUMBER := gme_api_pub.max_errors
,p_init_msg_list IN BOOLEAN := FALSE
,p_commit IN BOOLEAN := FALSE
,p_tran_row IN gme_inventory_txns_gtmp%ROWTYPE
,p_lot_no IN VARCHAR2 DEFAULT NULL
,p_sublot_no IN VARCHAR2 DEFAULT NULL
,p_create_lot IN BOOLEAN DEFAULT FALSE
,p_ignore_shortage IN BOOLEAN DEFAULT FALSE
,p_scale_phantom IN BOOLEAN DEFAULT FALSE
,x_material_detail OUT gme_material_details%ROWTYPE
,x_tran_row OUT gme_inventory_txns_gtmp%ROWTYPE
,x_def_tran_row OUT gme_inventory_txns_gtmp%ROWTYPE
,x_message_count OUT NUMBER
,x_message_list OUT VARCHAR2
,x_return_status OUT VARCHAR2);
GME_API_PUB.insert_line_allocation
===========
What am I doing wrong...why am I getting PLS-00306.
Can someone help?
Thank you
Sundar
[email protected]Hi John,
Thanks a ton - a nice Christmas gift. Thank you for being a Santa :-).
I used the same subscript as the one used for in parameter and the procedure compiled without errors.
A corollary: If (any of the) Out parameter is null (all columns of the row/array), will the array row element still be stored ? May be I cross the bridge when I come to it.
Merry Christmas.
Sundar -
I'm getting an instance of a class through the newInstance() method.I want to access that class members through this newly created object.But to do this, I have to typecast the object by its class name.In my case, the class is a dynamic one(i.e., unknown at the time of creating that object).I get the class name as a string through the getName() method.
HOW CAN I DO THE TYPE CASTING OR IS THERE ANY OTHER METHOD TO SOLVE THIS TYPE OF PROBLEM.
Example :
In this example, i have created an object t2 in the same class.but,in actual case, that object is created in some other program called test2. And test2 doesnt know abt the class(test1) being used.And is being determined at runtime (i.e., dynamical).
class test1
int i = 10;
String s;
public static void main(String a[]) throws InstantiationException, IllegalAccessException, ClassNotFoundException
test1 t = new test1();
System.out.println("I = " + t.i);
System.out.println("Class Name = " + t.getClass().getName());
t.s = t.getClass().getName();
Object t2 = t.getClass().newInstance();
System.out.println("t2 I = " + ((test1)t2).i);
System.out.println("t2 Class Name = " + t2.getClass().getName());If you have no idea what members the class could have in compile time, then how can you set them in runtime?
I think you should give another though to your OO design... -
Good
morning,
I am using
the “type cast” function and the “visa write” subvi to control a DO channel of
Arduino (RS232 communication), please see image attached. Can somebody advise how
should I program in LabVIEW in order to control more DO channels? Furthermore,
when I tried to read the output of “type cast function” during the run of vi I
saw a square symbol. Is there any way to decode this symbol ? I tried to use a
“decimal string to number” suvi but it didn’t work.
Thank you
in advance
Attachments:
samplevi.jpg 27 KBdan_u,
Thank you for your reply. It's the first time I am using RS232 communication and also other harware than that of NI and I am little bit confused. With the configuration shown on my vi everything seems to work fine. This means that I can enable and disable a DO channel of arduino, thus the format comes from the "type cast" function seems ok. A previous effort, when I tried to send a string (also by using the "write to visa") of "0" or "1" to disable and enable the same DO channel wasn't successful. This is the reason why I thought that using the "type cast" function is the correct way to write to visa. Now, what I want to do is using e.g three boolean to control three different DO channels. Could you please advise?
Thank you in advance
Attachments:
myvi.jpg 99 KB -
Could not type cast in java embedding
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
DocumentBuilder db = dbf.newDocumentBuilder();
org.xml.sax.InputSource in = (org.xml.sax.InputSource) getVariableData("Invoke_1_getRoutingAndFrameJumpers_OutputVariable","getRoutingAndFrameJumpersResponse");
Document doc = db.parse(in);
In the above code I am trying to type cast the variable getRoutingAndFrameJumpersResponse into org.xml.sax.InputSource so that i can parse.
I am not getting any error during compilation
but I am unable to type cast some run time error is coming in the line were I am type casting but I am not able to see the runtime error.
How can I see the runtime error in java embedding, how to type cast a variable into xml so that I can parse it.Hi Arun,
Could you try using the bpelx:rename extension in an assign activity enables a BPEL process to rename an element through use of XSD type casting.
<bpel:assign>
<bpelx:rename elementTo="QName1"? typeCastTo="QName2"?>
<bpelx:target variable="ncname" part="ncname"? query="xpath_str" />
</bpelx:rename>
</bpel:assign>
Cheers
A -
Expression Builder: convert string to number
Hi all,
I'm having trouble building a field validation rule for bank account numbers.
The numbers have 12 positions, so I cannot use a string or text number.
The validation rule to be implemented is that the last two digits are calculated based on the first 10 (modulo 97).
However, when I use the Mid function to pick the first characters, I am unable to do any calculations on it. Apparently, the string to number conversion doesn't work (it should work when I read the manual, as it says that when using an operator between two data types, the second type is converted to the first (cf. example of 1234+abcd (should result in 1234 as to the manual))). So I tried '1*Mid(...)' or '0+Mid(...)'. Syntactically the expression builder accepts it and I can save it. BUT when I change the particular value on the screen, it gives me an SSO error (not the Field Validation error message I entered).
Why isn't there simply a function ToNumber (like ToChar)????? How could I workaround this?
Any input very welcome!
FrederikApparently, I was a bit confused when typing the first sentence, it should be:
The numbers have 12 positions, so I cannot use an integer or number data type, but have to use String. -
Dynamic [Runtime] type casting in Java
Hello,
This is my requirement.
I have a method that takes class name as a parameter.
Ex:
Object myMethod(String classname){
Object xyz = getObject(); //userdefine method which returns some object
/*<b>I need to typecast above object with the class name passed as the method parameter</b>*/
/*<b>How can i type cast this object</b>*/
Object obj = (classname) xyz;
return obj;
In the above example, how can i dynamically typecast the object with class whose name is passed as the method parameter?Hello,
This is my requirement.
I have a method that takes class name as a parameter.
Ex:
Object myMethod(String classname){
Object xyz = getObject(); //userdefine method which
returns some object
/*<b>I need to typecast above object with the class
name passed as the method parameter</b>*/
/*<b>How can i type cast this object</b>*/
Object obj = (classname) xyz;
return obj;
In the above example, how can i dynamically typecast
the object with class whose name is passed as the
method parameter?Perhaps a little more background on the project (what you are trying to do) will help the experts here answer?
/*with a class that takes a noarg constructor*/
public Object getObject(String classname) throws Exception
//might want to get a bit more specific with which exceptions it will throw
return Class.forName(classname).newInstance();
}Do I think this sometimes is indicative (perhaps even more often than not), of a possible design flaw? Yes..
It gets a little trickier if you have constructors (you have to create a Class object representing the string with the .forName(..) ..and then use some reflection to determine constructors and then a bit of logic to determine which of those to use...)
~Dave -
Is it possible to make a type cast in TestStand?
I've got the following problem.
I use a receive function which waits for an undefined package. (struct package).
The problem is i can't specify the module with the exaxt package.
Generally in C i define a Pointer and create enough buffer for it. Is it the same in TestStand?
Is it possible to make a type cast?
for example:
i've got these packages
struct packet;
struct data;
the function does not know which structure to receive.
err = receive(buffer,maxlen);
how do i specify the buffer variable?
can i create a type "void" with a String to have enough buffer.
and then to make a type cast, for example "Locals.dataobject = ((data)Locals.buffer)"
any ideas?
thx for helpUnfortunately there is no way to do type-casts in TestStand. What you could do is write a wrapper-dll in C, that has for example two parameters for both possible structs. The dll then takes one of the parameters, does the typecast and passes it on to your original dll.
From TestStand you can pass the struct(or better container in the "TestStand language") you want to use to the accoridng parameter of the wrapper-dll, leaving the other parameter empty or with some default-value.
Hope this helps!
André -
Help needed in data type casting
I have a java program which will receive data and its type in the String format. During program execution, the data in the String data has to be converted into the respective data type and assigned to a variable of that data type so that it could be used in the program. Programmer may not know the type of data that the value has to be converted into.
I really got struck up with this. This is a RMI application and one process node is sending the data to another node in the String format and the type of data it should get converted into so that it can be converted into the respective type and used for computation.
Can you understand what I am asking for ....if you can pls help and it is highly appreciatedI dont know whether i ahve expressed it correctly
look at this code
dataPacket sendtoNode = send.senDatatoNode(inputReq);
String recnodnum = sendtoNode.nodeNum;
String recvarnum = sendtoNode.varNum;
String recvartype = sendtoNode.dataType;
String recvalvalue = sendtoNode.dataVal;
int num; int type;
double result;
// here in this case the result variable type is double
if (recvartype.equals("int")){
type = 1;
result = Integer.parseInt(recvalvalue); will pose problem
else
if (recvartype.equals("double")){
type = 2;
result = Double.parseDouble(recvalvalue);
else
if(recvartype.equals("float")){
type =3;
result = Float.parseFloat(recvalvalue); will pose problem
else
if(recvartype.equals("Boolean")){
if ((recvalvalue.equals("true")) || (recvalvalue.equals("TRUE")))
type = 4;
result = Boolean.parseBoolean(recvalvalue); will pose problem
else
if(recvartype.equals("char")){
type = 5;
result = (char)recvalvalue; will pose problem
else
if(recvartype.equals("String")){
type = 6;
result = recvalvalue; will pose problem
else
if(recvartype.equals("byte")){
type = 7;
result = Byte.parseByte(recvalvalue); will pose problem
else
if(recvartype.equals("long")){
type = 8;
result = Long.parseLong(recvalvalue); will pose problem
else
if(recvartype.equals("short")){
type = 9;
result = Short.parseShort(recvalvalue); will pose problem
//forvarval varvalue = new forvarval();
//varvalue.forvarval(recvartype, recvalvalue);
// this has to be done after sorting the problem of type casting string result = recvalvalue;
//result = value; //<this will surely give me a problem as i m assigning string to double>??
send.host(result);
System.out.println("result received and the result is " +recvalvalue );
now i need to assign the converted string in to a variable and use in the compuation ..thts where the challenge n not in teh conversion process...
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