Interpolating 2D matrix

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Jim Parsons
Jim Parsons 2017-10-13
评论： Matt J 2017-10-14
I am trying to interpolating the matrix below. I would like to end up with an n by 3 matrix, and so my interpolation needs to be done row-wise
matrix = [221 188 0
215 201 0
210 213 0
197 231 0
162 236 0
125 225 0
78 199 0
74 196 0
49 144 48
46 125 83
44 93 127
50 48 173
57 0 202
60 0 216];
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Jim Parsons
Jim Parsons 2017-10-14
Assuming that it can be made monotonic, how would I proceed ?
Star Strider
Star Strider 2017-10-14
Making the second column monotonic would necessarily make the first column non-monotonic. The second column also has duplicate values in the last two rows (as depicted in your Question), again destroying the monotonicity of the column.
I see no specific solution.

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回答（1 个）

Matt J
Matt J 2017-10-14
INTERP1 will do column-wise interpolation. You can apply it to the transpose of your matrix.
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Jim Parsons
Jim Parsons 2017-10-14
Thanks Matt J and Star Strider, with a few adjustments and using interp1 it worked.
Matt J
Matt J 2017-10-14
Glad to hear, but please click "Accept" if that's the case.

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