This question is an addition to this similar question. I'm trying to get a SoilGrid GeoTIFF image using OWSLib in python. Here is the script I am running:
from owslib.wcs import WebCoverageService
wcs = WebCoverageService('https://maps.isric.org/mapserv?map=/map/clay.map', version = '2.0.1')
# comes from my shapefile
bbox = (10.017215784693967, 35.63600166380057, 10.024866939934073, 35.64423653393575)
response = wcs.getCoverage(
identifier = ['clay_0-5cm_mean'],
crs = 'EPSG::4326',
bbox = bbox,
resx = 0.1, resy = 0.1,
format = 'image/tiff')
And here is the output I get:
Output exceeds the size limit. Open the full output data in a text editor
---------------------------------------------------------------------------
ServiceException Traceback (most recent call last)
/tmp/ipykernel_1537/4024548350.py in <module>
----> 1 response = wcs.getCoverage(
2 identifier = [coverage_id],
3 crs = crs,
4 bbox = bbox,
5 resx = 0.01, resy = 0.01,
~/anaconda3/envs/work_env/lib/python3.8/site-packages/owslib/coverage/wcs201.py in getCoverage(self, identifier, bbox, time, format, subsets, resolutions, sizes, crs, width, height, resx, resy, resz, parameter, method, timeout, **kwargs)
217 log.debug("WCS 2.0.1 DEBUG: Second part of URL: %s" % data)
218
--> 219 u = openURL(base_url, data, method, self.cookies, auth=self.auth, timeout=timeout, headers=self.headers)
220 return u
221
~/anaconda3/envs/work_env/lib/python3.8/site-packages/owslib/util.py in openURL(url_base, data, method, cookies, username, password, timeout, headers, verify, cert, auth)
209
210 if req.status_code in [400, 401]:
--> 211 raise ServiceException(req.text)
212
213 if req.status_code in [404, 500, 502, 503, 504]: # add more if needed
ServiceException: <?xml version="1.0" encoding="UTF-8"?>
<ows:ExceptionReport xmlns:ows="http://www.opengis.net/ows/2.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0.1" xml:lang="en-US" xsi:schemaLocation="http://www.opengis.net/ows/2.0 http://schemas.opengis.net/ows/2.0/owsExceptionReport.xsd">
...
<ows:Exception exceptionCode="InvalidParameterValue" locator="size">
<ows:ExceptionText>msWCSGetCoverage20(): WCS server error. Raster size out of range, width and height of resulting coverage must be no more than MAXSIZE=16384.</ows:ExceptionText>
</ows:Exception>
I've tried changing the resolution, I've tried using height = 100, width = 100 in the parameters, precising a time = '2013' argument, but I can't get it to work.
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After reading a little more documentation from the ISRIC web coverage service page, I ran the script again by changing the version to '1.0.0' (on the second line) as shown in the documentation.
wcs = WebCoverageService('https://maps.isric.org/mapserv?map=/map/clay.map', version = '1.0.0')
That doesn't return any errors, but it downloads a 587 octet .tif file (in less than 0.1 seconds) that obviously doesn't contain any data and can't be opened without returning a None element in python (opening it with a basic image viewer doesn't work either).
