OpenEuphoria

RE: text to number 2

• Posted by dmccu at connect.ab.ca Jan 30, 2002
• 425 views

Irv,

What is strtok.s?  

I haven't heard of that before.  Yes there are numbers mixed in with the 
text at random places and I have to extract the numbers from the text 
file I read in eg X3.5476Y5.0776  I have to take the numbers out and do 
math calculations on them in some cases,  then return them.


Irv Mullins wrote:
> dmc wrote:
> > ok, I have reviewed the value library function for converting a 
> > sequence to a number, but how do you get a sequence like 
> > {"-","1","2",".","2"} to be {"-12.2"} as the function needs it to be? 
> > Or am I missing something obvious? I need to make a file filter and I 
> > need to be able to convert back and forth regularly from string to 
> > numeric. 
> 
> The question no one has asked is: How are you getting 
> that strange sequence in the first place? 
> 
> You mention file filters, so I'm guessing you're reading 
> them from files. If so, you're just going about that in 
> the wrong way. 
> 
> If the files are pure numeric, then get() should work, no 
> conversion necessary.
> 
> If the files are mixed text and numbers, then
> you can either slice the numbers out, i.e. line[12..16]
> if they are column-aligned, or if the numbers appear in 
> random places within a line, use gets() to read in the line,
> and then parse the number(s) out with strtok.s, then convert 
> with value()
> 
> A sample of the input data would help.
> 
> Regards,
> Irv
> 
>