Hi Quinten,
I am processing some S2 imagery over Lake Erie, which is 174m from sea level.
I have a question on how to use the parameter settings for this. There is an 'elevation' field in the parameter settings, default = none. I couldn't explicitly find this in the manual, but if I wanted to manually enter a fixed elevation, do I set this as: 'elevation=174' for this lake?
Also, does this over-ride using DEM files? I tried using the DEM=True, but it acolite couldn't find my files, even though I had downloaded them.
I have a tried a few things, but couldn't get the DEM files to be found.
Finally - do I need them if the 'elevation' field is specified.
Thanks!
Tim
Here is the output:
Processing 1 scene...
Processing scene 1 of 1...
2019-10-29 10:06:46 - Processing /Volumes/data3/S2/Erie/DSF//S2A_MSI_2019_07_04_16_19_11_MERGED_L1.nc
DEM files not found in /Users/tim/Desktop/acolite_py_mac/data/SRTMGL3.003
Please download http://e4ftl01.cr.usgs.gov/MEASURES/SRT ... L3.hgt.zip to /Users/tim/Desktop/acolite_py_mac/data/SRTMGL3.003/N41W084.SRTMGL3.hgt.zip
Please download http://e4ftl01.cr.usgs.gov/MEASURES/SRT ... L3.hgt.zip to /Users/tim/Desktop/acolite_py_mac/data/SRTMGL3.003/N42W084.SRTMGL3.hgt.zip
Please download http://e4ftl01.cr.usgs.gov/MEASURES/SRT ... L3.hgt.zip to /Users/tim/Desktop/acolite_py_mac/data/SRTMGL3.003/N41W083.SRTMGL3.hgt.zip
Please download http://e4ftl01.cr.usgs.gov/MEASURES/SRT ... L3.hgt.zip to /Users/tim/Desktop/acolite_py_mac/data/SRTMGL3.003/N42W083.SRTMGL3.hgt.zip
Traceback (most recent call last):
File "/Users/quinten/gitdist/acolite/launch_acolite.py", line 30, in <module>
File "/Users/quinten/gitdist/acolite/launch_acolite.py", line 25, in launch_acolite
File "/Users/quinten/gitdist/acolite/acolite/acolite/acolite_cli.py", line 85, in acolite_cli
File "/Users/quinten/gitdist/acolite/acolite/acolite/acolite_run.py", line 216, in acolite_run
File "/Users/quinten/gitdist/acolite/acolite/acolite/acolite_ac.py", line 477, in acolite_ac
File "/Users/quinten/miniconda3/envs/acolite_dist_new/lib/python3.6/site-packages/numpy/lib/nanfunctions.py", line 1205, in nanpercentile
TypeError: ufunc 'true_divide' not supported for the input types, and the inputs could not be safely coerced to any supported types according to the casting rule ''safe''
[82000] Failed to execute script launch_acolite
exit 0
+ exit 0
Elevation question
Re: Elevation question
Hi Tim
The elevation is used to derive pressure to interpolate between LUTs. If you specify an elevation (in metres) it will override the other options (ancillary data/DEM). Setting elevation=174 would indeed work, but if you want to use the DEM you can leave elevation=None.
Are you using the binary distribution or the source code? If you are using the binary distribution, it may be worth a try extracting the DEM zip files. I only added the zip file support after the 2019-03-26 release.
Hope this helps!
Quinten
The elevation is used to derive pressure to interpolate between LUTs. If you specify an elevation (in metres) it will override the other options (ancillary data/DEM). Setting elevation=174 would indeed work, but if you want to use the DEM you can leave elevation=None.
Are you using the binary distribution or the source code? If you are using the binary distribution, it may be worth a try extracting the DEM zip files. I only added the zip file support after the 2019-03-26 release.
Hope this helps!
Quinten
Re: Elevation question
Hi Quinten,
Thanks for the explanation. I'll stick with setting the elevation for now.
I am using the binary distribution of Acolite on a mac, and I have indeed unzipped the DEM files (both zipped and unzipped are in the correct directory) but I get the same error.
I haven't tried recompiling, but maybe I'll give it a shot.
If you have any other thoughts on the DEM files for Mac, I'd be happy to try other variations.
Thanks!
Tim
Thanks for the explanation. I'll stick with setting the elevation for now.
I am using the binary distribution of Acolite on a mac, and I have indeed unzipped the DEM files (both zipped and unzipped are in the correct directory) but I get the same error.
I haven't tried recompiling, but maybe I'll give it a shot.
If you have any other thoughts on the DEM files for Mac, I'd be happy to try other variations.
Thanks!
Tim