How to change string to numeric which get from file?

[ixlty]

hello,

As a beginner of teststand, I meet with the issue as follow.

When I want to do with the data from external file, like csv, I find I can't change string directly to numeric.

How can I do with this?

Thanks in advance.

[~jiggawax~]

This is because your string is not a valid number.  "3b" is not a number.  What is it supposed to be?

[TTEng]

Jiggawax is correct but also using things like "evaluate" is sometimes helpful.

For example you could do something like:

Locals.MyNumber=Evaluate(Locals.MyString)

[croohcifer]

TTEng, I assume you mean 0x3B (i.e., it's a hex number).  If so, jigg has already answered your question here:

https://forums.ni.com/t5/NI-TestStand/How-to-convert-string-having-Hex-data-into-number/td-p/1605804

If not, please provide some more clarity...

[TTEng]

---

@croohcifer wrote:

TTEng, I assume you mean 0x3B (i.e., it's a hex number).  If so, jigg has already answered your question here:

https://forums.ni.com/t5/NI-TestStand/How-to-convert-string-having-Hex-data-into-number/td-p/1605804

If not, please provide some more clarity...

---

Your Right Jigg already provided the answer, all I was saying (not for his provided example) is that you can also use "evaluate" in some cases as that's a function i was unaware of until more recently.

[croohcifer]

Ah, sorry TTeng, I meant to direct that response to the OP ixtly.

Yes, you can also definitely use Evaluate() to convert a string to a number with the similar syntax, like Evaluate("0x" + Locals.HexString)  

[ixlty]

Sorry for my poor expression, before TestStand I used to program with labview. What I want is that to get the numeric from the beginning of string, like doing so by the way of labview as follow.