topic Re: Mosaic Landsat 8 without black bands in Data Management Questions

Mosaic Landsat 8 without black bands

MatthewNoteboom — Wed, 01 Feb 2017 16:57:07 GMT

I have lovely, untouched Landsat 8 images from USGS that I would like to merge/mosaic. However, I can't find a function to somehow ignore the zero-value wedges. I also processed a stack of files so that they don't have the zeroes but when I add those to a mosaic dataset, Arc seems to lose its s*&^ and jumbles up the values in the output bands (and for many, just puts in the maximum value, not the value from the input).

Re: Mosaic Landsat 8 without black bands

AdamZiegler1 — Wed, 01 Feb 2017 17:09:15 GMT

Hi Matthew - Here are a couple help topics that should get you where you need to be. The first is about managing no value, the second is choosing a blank symbol for no data.

NoData in raster datasets—Help | ArcGIS for Desktop

Symbolizing values of NoData in raster datasets—Help | ArcGIS for Desktop

Hope this helps,

Adam Z

Re: Mosaic Landsat 8 without black bands

MatthewNoteboom — Wed, 01 Feb 2017 17:20:02 GMT

Update, in case anyone has the same question:

I at least partly worked this out: use the "Define Mosaic Dataset NoData" tool. Now I just need to work out the best compromise method for non-zero values in the overlap.

Re: Mosaic Landsat 8 without black bands

DEAF_PROBERT_68 — Fri, 03 Feb 2017 18:57:09 GMT

I'm curious did you change the operator to blend ? In the past, I have used this in ENVI or ERDAS and it is so much easier...