Number format string

[0Forest0]

Hi to all. I have a question about formatString property when it form a number on indicator or "FormatToString" function.

How can I known the number lenght in simbols by it format string? In some cases it's easy: "%10d" - 10 symbols, but how it works in more complex cases, like "%010_7f" or "%f" or "%g"?

And how calculate symbols after point by formatString?

[GerdW]

Hi Forest,

use StringLength after the FormatString function!

(Most often FormatIntoString results in a variable amount of chars…)

[0Forest0]

---

@GerdWuse StringLength after...

---

I want to know it before the function is done.

[GerdW]

Hi Forest,

then you need to analyze your data - it is much easier to check after the conversion to string…

Example:

- value of 1 with a format of %g gets converted to "1.000000" (8 chars)

- value of 1 with a format of %#g gets converted to "1" (1 char)

- value of 1 with a format of %#3g gets converted to "  1" (3 chars)

- value of 1.001 with a format of %#3g gets converted to "1.001" (5 chars)

It is much easier to check string length after conversion than to analyze all possible input data with all possible format strings…

[crossrulz]

---

@GerdW wrote:

then you need to analyze your data - it is much easier to check after the conversion to string…

---

Not is it just easier, but a lot of the analysis would require at least most, if not all, of the conversion already.  So you might as well check it after the conversion and make your like A LOT simpler.

[0Forest0]

Number of desimal points I calculate like this:

And its work in many cases.

[crossrulz]

---

@0Forest0 wrote:

Number of decimal points I calculate like this:

And its work in many cases.

---

So you convert two strings into numbers to figure out the decimal length.  Again, that seems wasteful.  Just convert the original number and use Search/Split String and String Length to get your decimal length.

[0Forest0]

When I prepare long string of values I don't know what values (big or not) will convert to string. But I shall put numbers on exactly positions in result string. Then I should know lenght of result string basing on formats of containing values.