Remove string from item of list

Hi everyone:

I have a list like this:

(" 1 -30.0000 1158.3733 1" " 25 -29.7469 1158.5000 1" " 138 -29.3861 1158.6920 1")

How can I convert it to the following?

("-30.0000 1158.3733" "-29.7469 1158.5000" "-29.3861 1158.6920")

Thanks if you guide me

I think the list came from an external file [csv/txt]., What you need to do is separate the individual items before passing the values to a list.

Show us the code that you use to build the list and we'll pick up from there.

Hi

thanks for reply

This code 1deltxt.lsp to pars export data file.

List to File.lsp

text files are:

1-export list.txt

2-Chanage.txt

Ok, hang on...

thanks a lot

sure

thanks a lot

sure

What are you planning to do with the converted list? Do you need this a point list?

converted to floating point rather than strings? did you write those code yourself?

I do lots of things with points as a Civil engineer and like Pbe what is the bottom line of the desired ouput. It is feasible to pull apart the txt files from scratch and make your list of points directly.

I need this list to send use in a program called "CSDP"

But this question is important to me in this regard

How to solve this problem with the Lisp or Visual Lisp instructions

Regardless of what software is used in this information.

I wrote the first application using a post in one of the forums.

And the second program using the functions available in Lisp.

From a recent thread

Modified for your requirement

(defun _csv->lst ( str / pos)
[color="blue"](setq str (vl-string-left-trim  " "  str))   [/color] 
(if (setq pos (vl-string-position [color="blue"]32[/color] str))
   (cons (substr str 1 pos) (_csv->lst (substr str (+ pos 2)) [color="blue"]32[/color] ))
   (list str)
   )
)

resulting to

("1" "-30.0000" "1158.3733" "1") ("2" "-29.7469" "1158.5000" "1") ("3" "-29.3861" "1158.6920" "1") ....

 (strcat (cadr x) " " (caddr x)) 

Starting with the original text file makes more sense to me and just save a new text file with exactly what you want. Dont make un-necessary lists. The text file has patterns so its not that hard. This coding could be written in any programming language even write it in excel it has VBA built in.

What is "CSDP"

1 read line look for "Station" store line

2 continue reading look for "vertex"

3 read sequence of lines when blank is end of xsection.

Repeat reading lines with steps 1 2 3.

Last word opened in Excel and just copied and pasted to achieve result required no sweaty brow trying to write code just import using space as delimiter. Again make a macro to delete lines not required.

Hi pBe

Thank you

Your advice helped me solve my problem very much

Sincerely

Reza Monemi

Hi BIGAL

thank you for reply

I've already used your ideas in other posts.

To get to know "CSDP", go to the following address:

http://www.csdpworld.com/en/home.asp

Hi pBe

Thank you

Your advice helped me solve my problem very much

Good for you, Like what BIGAL said, the process can be streamlined by starting with the original text file.

Have fun coding.

pBe

:D:D:D:D:D

:):)

:shock:

The link did not explain what your trying to do.

Please refer to the links for more information