pdl> $x = sequence( 3, 3)-> float

pdl> p $x

[
 [0 1 2]
 [3 4 5]
 [6 7 8]
]


pdl> $i = PDL::IO::Image-> new_from_pdl( $x )

pdl> $i-> rescale(5, 5, 2)

pdl> $x_new = $i-> pixels_to_pdl

pdl> p $x_new

[
 [      0     0.4       1     1.6       2]
 [    1.2     1.6     2.2     2.8     3.2]
 [      3     3.4       4     4.6       5]
 [    4.8     5.2     5.8     6.4     6.8]
 [      6     6.4       7     7.6       8]
]

[download]

Note, that "float" is important instead of default "double". Also, check possible interpolation methods.

In reply to Re: Interpolating data using pdl by vr
in thread Interpolating data using pdl by karthik248

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