I recently have had some problems with and NDVI calculation in which I am seeing min/max bounds from -inf/inf. I decided to try to diagnose the problem by using the "find" command to identify points in the array which are a problem. However, I found that "find" cloud not identify infinite values properly. When the product is displayed, values are listing as missing to missing (actually, I can reset the range to -1,1 and see an NDVI result, so the array is not full of missing or even infinite values). I tried the following tests to identify infinite values in an array with no success.
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# this fails to identify locations of infinite value as well (find nothing)
# can't get the expected answer when looking for the opposite either (would expect an array with dimension of 1)