Considering NaN in downsampled spatial profile data #987
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Maybe it is not a critical bug. Using
std::minmax_element
orstd::min_element
/std::max_element
can not get the right min/max values from a segment if it contains NaN elements. To show it, introducing random NaN in generated images and remove this code line, then some of the spatial profile tests would fail. This PR is part of #797 for the cursor/point region spatial profile test.