Radix mit Hilfe des Eigenschaftsknoten ändern

[thomhofm]

Kann man bei einer numerischen Ausgabe mit Hilfe des Eigenschaftsknoten z.B. von Hex auf Dez umschalten?

Can I switch in the case of a numeric display with the help of characteristic knots of hexadecimal to decimal?

MfG

Thomas

[GuenterMueller]

Hello Thomas,

in LV8, simply specify 0 (for decimal) or 5 (for hex) to the property "Format & Precision:Format".

BR, Guenter.

[thomhofm]

Thank you at first.

If the format is U32 i can change from hex  to decimal, but not to dbl.

And if the format is dbl i can´t change to hex.

[becktho]

Hi Thomas

Could you clearify your task?

Do you want to switch the datatype (U8 > I16 > DBL) or do you want to switch the visible representation of the number (deicmal, hex, binary)?

Thomas

[thomhofm]

I want switch from DBL decimal to U32 hex.

[becktho]

As far as I know it is not possible to switch a control dynamically from DBL to U32.

What do you want to achieve with this? Maybe there is a solution to the general problem withoug this change of the datatype.

[rolfk]

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@thomhofm wrote:
I want switch from DBL decimal to U32 hex.

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You can't do that! This is an edit time only modification and therefore can't be done in a running application. LabVIEW is strictly typed and changing any datatype requires a recompile of the code, which is something that can only happen:

1) On VIs in edit mode (e.g. not running or reserved for running)

AND

2) Only in the LabVIEW development system and not in a build executable

Rolf Kalbermatter

Message Edited by rolfk on 05-12-2006 11:16 AM

[becktho]

Yes, rolf is right. After think a little bit more, this is not just a restricted operation in LV. I don't know any other language, where this is possible. If the program runs, memory is allocated for the variables. If you change the datatype you would get problems, because the memory is not allocated properly anymore.

[daveTW]

OK, but a solution to the problem would be to wire two indicators (same look, same bounds, same pos) to your data and switch the visibility with property nodes.

[rolfk]

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@daveTW wrote:
OK, but a solution to the problem would be to wire two indicators (same look, same bounds, same pos) to your data and switch the visibility with property nodes.

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This is one possible and quite nice solution for certain cases. Since the OP didn't really specify what it was he wanted to achieve I didn't take the time to come up with a number of possible solutions.

If it is only about showing information to a user you can also get around it sometimes by simply restricting precision to 0. If it is about being able to show numbers both in HEX and floating point then I do agree that your solution would be the most appropriate one although I have to admit that I struggle to come up with a situation where a number can be both something that is meaningfully presented as HEX as well as a floating point number.

Rolf Kalbermatter