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bashubuntuimagemagick
Hamza
Hamza

Reputation: 167

Using width and height from imagemagick identify

I have learned that I can get the width and height of an image using:
identify image
How do I extract the width and height from the result of identify and store it in a variable ?

Upvotes: 3

Views: 1658

Answers (1)

John1024
John1024

Reputation: 113844

To set shell variables width and height to the width and height of an image, use:

width=$(identify -format '%w' "$filename")
height=$(identify -format '%h' "$filename")

Doing arithmetic on bash variables

The variables width and height can be manipulated using all the standard bash arithmetic operations. For example:

$ width=$(identify -format '%w' "$filename")
$ echo "w=$width  2*w=$((2*width))  5+3*w=$((5+3*width))"
w=400  2*w=800  5+3*w=1205

Upvotes: 7

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