Generate jpg files using line length (pixels) and orientation (degrees)

Denis McMahon denismfmcmahon at
Sun Jan 11 01:32:18 CET 2015

On Fri, 09 Jan 2015 09:49:25 -0800, semeon.risom wrote:

> Thank you for the help btw. I think I'm close to a solution, but I'm
> having issue feeding the coordinates from my csv file into the formula.
> This is the error I get:
> Traceback (most recent call last):
>   File "C:\Users\Owner\Desktop\Stimuli Generation\Coordinates\Generate_w
>", line 68, in <module>
>     makeimg(length, orientation)
>   File "C:\Users\Owner\Desktop\Stimuli Generation\Coordinates\Generate_w
>", line 40, in makeimg
>     orientation = orientation % 180
> TypeError: unsupported operand type(s) for %: 'list' and 'int'
> and here's the code:
> from PIL import Image, ImageDraw from numpy import math
> # import csv import csv f = open('C:\Users\Owner\DesktopStimuli
> Generation\Coordinates\file.csv', 'rb')
> rdr = csv.reader(f)
> i = 0 a = []
> b = []
> for row in rdr:
>         a.append(row[0]) 
>         b.append(row[1])

This makes a and b both lists

Having read some other errors that you are having, you need to make sure 
that these items are numeric and not string data

for row in rdr:

> # using lists of values for length in [a]:
>     for orientation in [b]:
>         makeimg(length, orientation)

This puts list a inside another list, and puts list b inside another 
list, and then passes the whole of lists a and b in the first call to 

makeimg expects 2 integer parameters on each call, not two lists!

As you have already created lists, you don't need to wrap them inside 
another list.

# using lists of values 
for length in a:
    for orientation in b:
        makeimg(length, orientation)

Denis McMahon, denismfmcmahon at

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