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Need LISP Function to read text contents and convert ratio to number.
nvoss posted a topic in AutoLISP, Visual LISP & DCLI have a vector map of a floor and all i am given are vectors and grade ratios (i.e. 1:155.095, 1:97.561) of the floor. The problem is that I only want to look at the areas of the floor that are below a certain grade ratio (1:69), but they are ratios set as Text Contents so AutoCAD doesnt understand that these ratios are numbers. I am looking for a Lisp function that, for each text if a ratio across an entire floor (or the layout), copy the text (which is a ratio), find out the number that the ratio is (i.e. take the 1 and divide by 69), then replace the text with just the number (0.0145). I want this to do this for every instance, and there are over 37,000 of these texts on the floor in question. I have attached an image that depicts what I have in the layout. Does anyone know of a lisp function that can do this?