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Re: Low pass filter - Problem with kernel [message #50402]

Tue, 03 October 2006 07:41

James Kuyper
Messages: 425
Registered: March 2000

Senior Member

Vidhya wrote:
> Dear All,
>
> Stuck with the error message:
>
> "% CONVOL: Incompatible dimensions for Array and Kernel.
> % Execution halted at: $MAIN$"
>
> while trying to apply a low pass filter to one of my image data.
>
> The array dimensions for kernel is
> IDL> help, kernel
> KERNEL FLOAT = Array[3, 3]
> IDL> help, column_log
> COLUMN_LOG FLOAT = Array[1, 374]

It would help a great deal if you showed us a simplified version of the
code that actually failed. As it is, we can can't be sure what you're
doing. For instance, what is column_log? If it's the array that you're
trying to convolve with that kernel, you've got a serious problem:
column_log has a length of only 1 in the first dimension, which is
insufficient to make use of a kernel whose first dimension has a length
of 3. If you're talking about an image, the data you're convolving
shouldn't be a 1x374 array. What is the shape of the image that you're
trying to convolve?

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[Message index]

		Re: Low pass filter - Problem with kernel By: James Kuyper on Tue, 03 October 2006 07:41
		Re: Low pass filter - Problem with kernel By: David Fanning on Tue, 03 October 2006 05:52
		Re: Low pass filter - Problem with kernel By: Vidhya on Wed, 04 October 2006 02:44

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