ni.com is currently undergoing scheduled maintenance.
Some services may be unavailable at this time. Please contact us for help or try again later.
LabVIEW
Display numeric as standardized scientific notation
This must have been discussed before but I cannot find it.
In LabVIEW, scientific notation is displayed in the form "1.234E+5", but the standard for scientific notation is 1.234 x 105. I would like both numeric indicators and graph scales be able to display like that. Is there a reasonable way to get that? I’m guessing no since there is a superscripted character in there.
But can NXG do it?
At least it would be nice to get graph scales in this format (whatever it is called): 105.
Bonus points to anyone finding a way of formatting SI units the standardized way, with a space between the value and the unit, like "2.4 GHz", standard SI style convention. And no, "%#p Hz" is incorrect.
Hi thols,
@thols wrote:
This must have been discussed before but I cannot find it.
Yes. Like here…
I guess NI follows the "industry standards" with same (or very similar) format codes as in any other programming language…
(You can always create your own formatting/conversion routines to create 2D pictures containing the requested "1.2345×10³"…)
@thols wrote:
but the standard for scientific notation is 1.234 x 105.
Is it really "standard" to place the char "x" (ASCII-120) in between the numbers? 😄
@thols wrote:
This must have been discussed before but I cannot find it.
In LabVIEW, scientific notation is displayed in the form "1.234E+5", but the standard for scientific notation is 1.234 x 105. I would like both numeric indicators and graph scales be able to display like that. Is there a reasonable way to get that? I’m guessing no since there is a superscripted character in there.
But can NXG do it?
At least it would be nice to get graph scales in this format (whatever it is called): 105.
Bonus points to anyone finding a way of formatting SI units the standardized way, with a space between the value and the unit, like "2.4 GHz", standard SI style convention. And no, "%#p Hz" is incorrect.
It must be some kind of standard, because if you paste "1.234E+5" (sans quotation marks) into any spreadsheet application, you get the number. I think this must be a standard for SI units in a computer-ready format because you'll find almost every instrument will output numbers in this fashion. I've never seen an instrument return numbers in what I would call "human-formatted" SI units. Takes too many extra characters. 1.234E+5 or 1.234 x 10^5. Too much wasted space - half again as much space - taken up conveying exactly the same information.
If forgot to mention that your request is entirely reasonable, though. And as for part 2 of your post, that really annoys me as well. There should be a space, and the fact that there isn't makes that format useless to me. (Probably my tendencies towards OCD is in play here.)
@billko wrote:
And as for part 2 of your post, that really annoys me as well. There should be a space, and the fact that there isn't makes that format useless to me. (Probably my tendencies towards OCD is in play here.)
I just don't have the space and I am content (%#pHz). There was some discussion about this in the Rube-Goldberg thread.
@crossrulz wrote:
There was some discussion about this in the Rube-Goldberg thread.
It wouldn't surprise me if that discussion was the trigger for this thread!
@thols wrote:
This must have been discussed before but I cannot find it.
In LabVIEW, scientific notation is displayed in the form "1.234E+5", but the standard for scientific notation is 1.234 x 105. I would like both numeric indicators and graph scales be able to display like that. Is there a reasonable way to get that? I’m guessing no since there is a superscripted character in there.
But can NXG do it?
At least it would be nice to get graph scales in this format (whatever it is called): 105.
Bonus points to anyone finding a way of formatting SI units the standardized way, with a space between the value and the unit, like "2.4 GHz", standard SI style convention. And no, "%#p Hz" is incorrect.
Also, can you get the exponent in prefix sizes? I don't have LV on this computer so can't check right now. On a calculator you can often press ENG to write it in 'engineering' units, so 1.234E5 becomes 123.4E3 (the exponent is always a factor of 3).
/Y
Hi Yamaeda,
@Yamaeda wrote:
Also, can you get the exponent in prefix sizes? I don't have LV on this computer so can't check right now. On a calculator you can often press ENG to write it in 'engineering' units, so 1.234E5 becomes 123.4E3 (the exponent is always a factor of 3).
From the LabVIEW help on "format strings":
Add ^ to change to engineering notation where the exponent is always a multiple of three.
@cbutcher wrote:
@crossrulz wrote:
There was some discussion about this in the Rube-Goldberg thread.It wouldn't surprise me if that discussion was the trigger for this thread!
I thought this sounded familiar!
