Reproject using biquadratic and bicubic interpolation returns Nans

[Sebokolodi]

I am working on reprojecting SIN images to an HPX projection. While using nearest-neighbor and bilinear interpolation generates images successfully, these methods aren't optimal for conserving flux. I prefer to use biquadratic or bicubic interpolation, but unfortunately, all output images turn out as NaNs when I apply these methods.

And there is no error message. There was similar issue before, but not sure if the issue was resolved.

[astrofrog]

Could you provide the input and output headers you are using?

[Sebokolodi]

output_header.txt input_header.txt

[Sebokolodi]

Any update on this issue?

[xcxcli]

I met the same problem. I replaced all NaN in input_data and the problem was solved.

[astrofrog]

Yes I think that those interpolation techniques basically fail if there is a single NaN in the input image.