Empty width output file

[sgrieve]

Hello,

I have been working with my student on applying this code to some locations in Somalia and Ethiopia. We have been using the javascript version described here. We are able to run your example, and get good data out, but when we run it for another location the code outputs an empty csv file with no data, not even the headers of the csv file.

You can see the location and landsat image we are using here.

I wondered if this was an issue in detecting rivers in arid landscapes, so I experimented with some reaches of rivers in locations to your example, but had the same problems.

Are you able to offer any insight into what we are doing wrong?

Many thanks!