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Re: croping jpeg image [message #91218 is a reply to message #91207]

Wed, 17 June 2015 11:46

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

On Wednesday, June 17, 2015 at 8:44:26 AM UTC-5, kpaa...@gmail.com wrote:
> i have opened a jpeg image in idl using
> tv,image,true=1
>
> now i want to crop only the central region of the sun where sunspots are present.... for these i used the cursor command and placed it in low left and right---got the co-ordinates----and then placed the cursor at right top--got the x and y......then i used image=image[low x:topx,lowy:topy]
>
> but im not getting the image croped....instead getting
> % subscript range values of the form low:high must be >=0,<size,with low<=high:image

What are the values for low_x, top_x, etc? What are the dimensions of image?

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[Message index]

		croping jpeg image By: kpaapu123 on Wed, 17 June 2015 06:44
		Re: croping jpeg image By: Phillip Bitzer on Wed, 17 June 2015 11:46
		Re: croping jpeg image By: Shaktivel Pillai on Wed, 17 June 2015 21:27
		Re: croping jpeg image By: Dick Jackson on Wed, 17 June 2015 21:41
		Re: croping jpeg image By: jimuba on Wed, 17 June 2015 16:27
		Re: croping jpeg image By: Shaktivel Pillai on Wed, 17 June 2015 21:27

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