How do i show a 1D array on an xy graph?

I want to have program control over my graphs Y axis scaling and min/max values. - I cant do this with graph or chart displays, but should apparently be able to do it with an XYgraph display.
My input data is a 1D numeric array, (voltage measurements taken by a piece of laboratory kit at regular time intervals) and I want to control the Y-axis values so that the graph shows the most important part of the data, zoomed right in, so autoscale is of no use to me.....
Is there a function I can use on my 1D array to connect to the X axis of the XYgraph so that the Y axis is my varying voltage and the Yaxis is just the number of the sample? The data reaches me as an ascii text file with one item per line and I've transformed it into a
numeric array.
I must say I'm very new to this labview stuff and find it amazingly powerful but difficult to do anything without a previous example to plunder.
I'm running Labview 7.0 express full developer version.
Hope you can help me.

No need for an XY graph in this case; just wire the array to a graph and if you want to zoom in on something programmatically you can control the min and max, scaling and pretty much everything else using a property node (just right-click on the graph, select create property node and then click on it to select which property to set, you can expand it to read/write multiple properties with the same node, or create multiple property nodes. The Y axis will by default just show the array index number unless you set the X0 and delta X properties.
MTO

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How can i get the time and result together show in one Array or in Cluster?

hello everyone i am a new user .I want to get the time and voltge form a Generater. How can i get the time and result together show in one Array or in Cluster?When i selecte the first(or third...) result then in the front panel display the time and the voltge.Thank you!
I post the time and voltge NOT together photo
Attachments:
12345.GIF ‏54 KB

You can create an array of clusters with one element being the time and the other being the voltage, like so (using the "Get Waveform Components" function):
Message Edited by smercurio_fc on 10-17-2007 03:15 PM
Attachments:
pic.PNG ‏11 KB

How do I create a 1d array that takes a single calculation and insert the result into the first row and then the next calculation the next time the loop passes that point and puts the results in thsecond row and so on until the loop is exited.

The attached file is work inprogress, with some dummy data sp that I can test it out without having to connect to equipment.
The second tab is the one that I am having the problem with. the output array from the replace element appears to be starting at the index position of 1 rather than 0 but that is ok it is still show that the new data is placed in incrementing element locations. However the main array that I am trying to build that is suppose to take each new calculation and place it in the next index(row) does not ap
pear to be working or at least I am not getting any indication on the inidcator.
Basically what I am attempting to do is is gather some pulses from adevice for a minute, place the results for a calculation, so that it displays then do the same again the next minute, but put these result in the next row and so on until the specifiied time has expired and the loop exits. I need to have all results displayed and keep building the array(display until, the end of the test)Eventually I will have to include a min max section that displays the min and max values calculated, but that should be easy with the min max function.Actually I thought this should have been easy but, I gues I can not see the forest through the trees. Can any one help to slear this up for me.
Attachments:
regulation_tester_7_loops.vi ‏244 KB

I didn't really have time to dig in and understand your program in depth,
but I have a few tips for you that might things a bit easier:
- You use local variables excessively which really complicates things. Try
not to use them and it will make your life easier.
- If you flowchart the design (very similar to a dataflow diagram, keep in
mind!) you want to gather data, calculate a value from that data, store the
calculation in an array, and loop while the time is in a certain range. So
theres really not much need for a sequence as long as you get rid of the
local variables (sequences also complicate things)
- You loop again if timepassed+1 is still less than some constant. Rather
than messing with locals it seems so much easier to use a shiftregister (if
absolutely necessary) or in this case base it upon the number of iterations
of the loop. In this case it looks like "time passed" is the same thing as
the number of loop iterations, but I didn't check closely. There's an i
terminal in your whileloop to read for the number of iterations.
- After having simplified your design by eliminating unnecessary sequence
and local variables, you should be able to draw out the labview diagram.
Don't try to use the "insert into array" vis since theres no need. Each
iteration of your loop calculates a number which goes into the next position
of the array right? Pass your result outside the loop, and enable indexing
on the terminal so Labview automatically generates the array for you. If
your calculation is a function of previous data, then use a shift register
to keep previous values around.
I wish you luck. Post again if you have any questions. Without a more
detailed understanding of your task at hand it's kind of hard to post actual
code suggestions for you.
-joey
"nelsons" wrote in message
news:[email protected]...
> how do I create a 1d array that takes a single calculation and insert
> the result into the first row and then the next calculation the next
> time the loop passes that point and puts the results in thsecond row
> and so on until the loop is exited.
>
> The attached file is work inprogress, with some dummy data sp that I
> can test it out without having to connect to equipment.
> The second tab is the one that I am having the problem with. the
> output array from the replace element appears to be starting at the
> index position of 1 rather than 0 but that is ok it is still show that
> the new data is placed in incrementing element locations. However the
> main array that I am trying to build that is suppose to take each new
> calculation and place it in the next index(row) does not appear to be
> working or at least I am not getting any indication on the inidcator.
>
> Basically what I am attempting to do is is gather some pulses from
> adevice for a minute, place the results for a calculation, so that it
> displays then do the same again the next minute, but put these result
> in the next row and so on until the specifiied time has expired and
> the loop exits. I need to have all results displayed and keep building
> the array(display until, the end of the test)Eventually I will have to
> include a min max section that displays the min and max values
> calculated, but that should be easy with the min max function.Actually
> I thought this should have been easy but, I gues I can not see the
> forest through the trees. Can any one help to slear this up for me.

How can I show text sentence on XY graph

Hello,,,, anyone knows??? How can I show text sentence on XY graph?
I just know that the only numeric data type can be the input data but my case I have both the number and message to show on the same graph.
Thanks in advance
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You start out with an array of zero size. Since replace array subset does not change the size of an array, you stay with zero annotations. If nothing is there, you cannot replace it.
Possible solutions:
(A) Instead of reading the current annotation list (which is zero!), you could initialize the shift register with a diagram constant (right-click...create constant), expand it to the desired number of elements and make them all e.g. with a blank text.
(B) Alternatively, you can manually create the desired number of annotation by right-clicking on the graph and select "data operations...create annotations". Now you start of with an array of the correct size if you read the annotation list with a property node and you can replace them programmatically with new annotations as desired.
(C) You can also initialize the shift register with an empty array, then use built array to add annotations.
LabVIEW Champion . Do more with less code and in less time .

How to do like this with array?

How to do like this with array?
I have 2 constants array put in main while loop ( array1{6,6}; array2{4,4} ). Those arrays will be come the input data for st in the small while loop inside.
The input data look like : [6,6],[4,4],[6,6],[4,4]...... I have to put input data to result array[8]. The method is:
input data result data
[6,6] --------------------------------------------> [6,6,0,0,0,0,0,0]
[4,4] --------------------------------------------> [6,6,4,4,0,0,0,0] ( this period, just add each element in new array)
[6,6] --------------------------------------------> [6,6,4,4,6,6,0,0]
[4,4] --------------------------------------------> [6,6,4,4,6,6,4,4]
[6,6,4,4,6,6,4,4] ( 1st period )
When the las index of result data array is filled in, I have to collapse the result data array to be this array:
----------> collapse: [6,4,6,4,0,0,0,0] ( take the average of 2 continuous element add to new result data array)
Next input data
[6,6] --------------------------------------------> [6,4,6,4,6,0,0,0]
[4,4] --------------------------------------------> [6,4,6,4,6,4,0,0] ( this period, add the average of 2 continuous elements in new array )
[6,6] --------------------------------------------> [6,4,6,4,6,4,6,0]
[4,4] --------------------------------------------> [6,4,6,4,6,4,6,4]
[6,4,6,4,6,4,6,4] ( 2 nd period)
----------> 2nd collapse [5,5,5,5,0,0,0,0] ( take the average of 2 continous element add to new result data array)
Next input data
[6,6] ....wait until input data has 4 elements
[4,4] -------------------------------------------------------------------------------------> [5,5,5,5,5,0,0,0]
[6,6] ....wait until input data has 4 elements
[4,4] -------------------------------------------------------------------------------------> [5,5,5,5,5,5,0,0]
[6,6] ....wait until input data has 4 elements
[4,4] -------------------------------------------------------------------------------------> [5,5,5,5,5,5,5,0]
[6,6] ....wait until input data has 4 elements
[4,4] -------------------------------------------------------------------------------------> [5,5,5,5,5,5,5,5]
[5,5,5,5,5,5,5,5] ( third period )
----------> 3rd collapse [5,5,5,5,0,0,0,0]
This wayl to make the tren graph.I made an VI to do that , but it's not yet correct.
Attachments:
tryyyyyyy.vi ‏39 KB
trend_mode.JPG ‏49 KB

Frankly, I don't understand your problem description or your VI.
In the description, the output array has a fixed size of 8 elements, is this correct? In this case you should initialize an array of 8 elements and do all operations "in place". I don't udnerstand the purpose of all the other code.
There are a lof of things that don't make any sense at all.
The second largest loop has no purpose, because it iterates only once per call
Sometimes you are concatenating an empty array to an existing array. This makes no difference.
Why is some of your data EXT representation???
What's up with complicated constructs such as that small loop shown in the picture. I show a somewhat simpler alternative.
Anyway, I have a hard time understanding your description. What should happen at the end? Do you have a link to a website that describes the algorithm? Does the algorithm have a name?
Message Edited by altenbach on 01-10-2008 09:55 AM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
Simplify.png ‏5 KB

How can i show a Data that receiving from PLC, showing it by Round leds?

I need to show Data from a PLC, which consists in 4 Bytes of information. This information is according to 0 and 1 combination and i wold like to show by Round Leds.
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I have used "String to Byte array" but i cann`t show the Byte (0,1) and otherwise the Round Leds
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I`ll show you my program.

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Message Edited by GerdW on 07-04-2009 10:52 AM
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome
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string2bool.vi ‏21 KB

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I have strucked with a simple but a complex problem.
I have a Report with data in vertical rows..need of the hour is how can we show that data into column structure.
here is the table sample which i have in Database..
Location      chrg_type    Effective_date
xxxxxxx        xxxx          xx-xx
thhis is the structure in effective date we have several months in it in a single column i want show the effective date or effective month in various columns instead of a single column.
my required table is....
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Location      chrg_type     xx-xx              xx-xx
xxxxxxx        xxxx          xx-xx
any tough heads?????

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Anyway, once you have that you need to move on to how to move the data out into columns based on date.
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THEN {tbl.DataField}
1_Date = IF DATEPART('m',{tbl.Effective_date}) = DATEPART('m',DATEADD('m', -1, CurrentDate)) AND
DATEPART('yyyy',{tbl.Effective_date}) = DATEPART('yyyy',DATEADD('m', -1, CurrentDate))
THEN {tbl.DataField}
2_Date = IF DATEPART('m',{tbl.Effective_date}) = DATEPART('m',DATEADD('m', -2, CurrentDate)) AND
DATEPART('yyyy',{tbl.Effective_date}) = DATEPART('yyyy',DATEADD('m', -2, CurrentDate))
THEN {tbl.DataField}
... Repeat this process until you have all of the columns you need, following this format.
Hope this works for you,
Jason

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How can I pass an empty array to a parameter of type PLSQLAssociativeArray in VB? I defined the parameter like this
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guest0012 wrote:
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