String double conversion

I got a big trouble converting double values to strings and viceversa.
Look a the code
          String amountString = "0.288";
          double amount = Double.parseDouble(amountString);
          amount *=100;
          System.out.print(amount);
This computation leds to the resulting amount: 28.799999999999997!
thats quite different from "0.288".
Has someone some idea what's happening?
thanks

And who is the slowest old sod again? ;-)But you managed to post a fancy link. :)Yup, so virtually I was first ;-) Seriously though: this forum needs
a FAQ list. This question has been asked more than often, in one
variation or another. If I'm not mistaken the usenet comp.lang.java.*
hierarchy has a FAQ list. Maybe that one would be a fine link to
pass around.
kind regards,
Jos

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String to 2D string array conversion

Hi,
I have a string like this below. I would like to extract all the texts within the quotes " ". How to do that?.
05-Mar.20:52 skalyana label type "BASELINE_1.2" (locked)
28-Apr.19:19 skalyana label type "BASELINE_1.8"
i have tried using Match regular expression. I am able to extract one text within " ".
I would like to know how to extract all the text within " "
I have attached the vi for your reference
Thanks
Kalyan
Attachments:
string to 2D string array conversion.vi ‏19 KB

Hi Jim,
its simply superb...
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HELP: String to double conversion?

Hello,
I want to convert a String to a double, and then use this double for a calculation. The conversion seems to be ok, but I get an error with the calculation... Please HELP!
A part of my code:
double angle;
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Thanks in advance.

This is happening because you want to multiply a Double object, instead of a double value. Do this:
Double converted_angle; should be double converted_angle;
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check this link for your options:
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String exponent number to integer and double conversion

Anyone who can help please,
I am receiving data back from an Agilent E4407B with the noise figure option in the following form:
+1.00000000E+008,+1.52799997E+001,+1.00000000E+009,+1.52200003E+001,+2.00000000E+009,+1.51099997E+001,+3.00000000E+009,+1.50799999E+001,
for up to 401 pairs of frequencies and amplitude figures. This is all coming back in one long string.
I want to read the pairs of figures into a 2 dimensional array, so that the first part of the array has the frequency in an double format, but NO exponent, and the second part of the array has the ENR value agan in a double format and also with NO exponent.
I have been using:
double ENR_Data[401][2];
Scan(Databuf,"%s>%401f[x]",&ENR_Data);
This reads the data into the array, but retains the exponent - please can someone show me the correct Scan formatting functions to use so that I keep just the number, and loose the scientific exponent format?
Many thanks for any help,
Allen Cherry

Allen:
It doesn't matter how you represent the doubles: the compiler represents them the same.
double a = 2000000000.00;
double b = 2e9;
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In your last reply, your interpolated value of (say) 25000000000 = 2.5e10, which is greater than 2e9 and 3e9. You said you may have the wrong number of zeros in the example, but please make sure you have the right number of zeros in your code.
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Check the code I included below. It's based on the numbers shown in your example. It correctly determines if a number is greater than or less than a desired interpolated point.
P.S. What algorithm are you using to do you interpolation? I don't even know why you are searching for a number greater than some known value: you should be interpolating between points read from the array.
#include <ansi_c.h>
#include <utility.h>
#include <formatio.h>
main()
char Databuf[] = "+1.00000000E+008,+1.52799997E+001,+1.00000000E+009,+1.52200003E+001,"
     "+2.00000000E+009,+1.51099997E+001,+3.00000000E+009,+1.50799999E+001";
double ENR_Data[401][2];
double interpValue = 2.5E9;
// same as
// double interpValue = 2500000000.00;
int i;
Scan(Databuf,"%s>%401f[x]",&ENR_Data);
for (i=0; i<4; i++)
  if (ENR_Data[i][0] > interpValue)
   printf("%f (%e) > %f (%e)\n",
    ENR_Data[i][0], ENR_Data[i][0],
    interpValue, interpValue);
  else
   printf("%f (%e) <= %f (%e)\n",
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    interpValue, interpValue);
printf("Press any key to continue...\n");
GetKey();

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Hello,
I want to convert a string to a double on my Real Time device (PXI-8101. When I use the "scan value" or "Fract/Exp String To Number Function" VI the numbers after comma dissapear. This does not happen on the Host (PC).
So for example on the host vi, the string "2121,3" gives the number 2121,3. If I do the same thing on the Real Time, the string "2121,3" returns the number 2121.
How can I fix this?
Thanks in advance,
Regards,
Dries
Solved!
Go to Solution.
Attachments:
String2Number.vi ‏7 KB

Hello,
Thanks for the reply, but scan from string also does not return the correct number on the RT device. The VI returns the number after comma as the remaining string. Any other suggestions?
Best regards,
Dries
Attachments:
String2Number.vi ‏8 KB

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Hopefully a simple one for you gurus,
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tia.

You will get ur question answered at the following webpage:
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Sorry, in that code I missed intermediate conversion into decimal(10,2). I forgot we can not convert directly.
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Hi experts,
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apex version: 4.2.0.00.27
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EXPORTED CODE:
wwv_flow_api.create_template (
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'<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/datepicker.js"></script>'||unistr('\000a')||
'<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/datepicker-ext.js"></script>'||unistr('\000a')||
'<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_show_hide_region.js"></script>'||unistr('\000a')||
'<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_desktop_all.js"></script>'||unistr('\000a')||
'<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_legacy.js"></script>'||unistr('\000a')||
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''||unistr('\000a')||
'#APEX_CSS#'||unistr('\000a')||
'#TEMPLATE_CSS#'||unistr('\000a')||
'#THEME_CSS#'||unistr('\000a')||
'#PAGE_CSS#'||unistr('\000a')||
'#TEMPLATE_JAVASCRIPT#'||unistr('\000a')||
'#APPLICATION_JAVASCRIPT#'||unistr('\000a')||
'#PAGE_JAVASCRIPT#'||unistr('\000a')||
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'</head>'||unistr('\000a')||
'<body #ONLOAD#>#FORM_OPEN#'
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'</tr>'||unistr('\000a')||
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<html lang="&BROWSER_LANGUAGE." xmlns:htmldb="http://htmldb.oracle.com">
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<title>#TITLE#</title>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_common2.js"></script>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/datepicker.js"></script>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/datepicker-ext.js"></script>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_show_hide_region.js"></script>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_desktop_all.js"></script>
<script type="text/javascript" src="#IMAGE_PREFIX#app/common/js/app_legacy.js"></script>
<link rel="stylesheet" href="#IMAGE_PREFIX#app/pbh/css/pbh.css" type="text/css" />

#APEX_CSS#
#TEMPLATE_CSS#
#THEME_CSS#
#PAGE_CSS#
#TEMPLATE_JAVASCRIPT#
#APPLICATION_JAVASCRIPT#
#PAGE_JAVASCRIPT#
*#APEXCSS#*_
*#TEMPLATECSS#*_
*#THEMECSS#*_
*#PAGECSS#*_
*#APEXJAVASCRIPT#*_
*#TEMPLATEJAVASCRIPT#*_
*#APPLICATIONJAVASCRIPT#*_
#HEAD#
</head>
<body #ONLOAD#>#FORM_OPEN#
The added substitution strings are bold + underlined.
Is there a parameter (application, export, template, instance level) that we can set to prevent this ?
Edited by: Karel C on 12-feb-2013 5:32
Edited by: Karel C on 12-feb-2013 5:32

Hi Patrick,
The version info is: wwv_flow_api.set_version(p_version_yyyy_mm_dd=>'2009.01.12');
This should be wwv_flow_api.set_version(p_version_yyyy_mm_dd=>'2012.01.01');
... but this error is due to a manual modification of the export file.
We parameterise some values, so that the we can use the old-school DEFINE variables in our deploy process via SQL/plus.
One of the developers made a copy-paste error when doing that ...
So there is no bug !
Thanks for the tip !!
Kind regards,
Karel

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String character conversion

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Rather than crossing your fingers and hoping for the right encoding, you should provide the encoding you wish to transcode explicitly. Here, I test US-ASCII and ISO-8859-1. US-ASCII complains for all code points above 127 (as expected; it's a 7-bit encoding), whereas ISO-8859-1 runs without complaining.
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bytes[0] = (byte) i;
String temp = new String(bytes, encodingName);
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Me and my girlfriend both have iPhone 4s and iMac. When i send an iMessage/SMS they create two different conversations. IMessages that send to my girlfriend's e-mail come from my phone number and vice versa. So we have two indepdent conversations and that's bad. And now Mac OS X iMessage beta appears. And when i send message from my imac she recive it only on iphone. When she sends message from iphone i recieved it both on imac and phone.

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Hi. I'm having a string with 10340.8878 which is essentially a GPS latitude coordinate. I will need to break it up separately into double type 103,40 and 88.
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88 refers to the seconds
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