I am using the rasterstats python module zonal_stats to calculate the mean solar irradiance value (taken from a raster) inside each land particle (contained in a shapefile).
If I
print(irradiance.read().shape) I get : (1, 2852, 2425)
Then, I do:
with rioxarray.open_rasterio("C:/Users/Daniele/OneDrive/PhD/GIS + ESOM/GetSolarIrr/Solar_Irradiance/Yearly/Int_AreaSol_3.tif") as src:
stats = zonal_stats(particles,src)
And i get the following error:
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
~\AppData\Local\Temp\ipykernel_14588\3822157982.py in <module>
1 with rioxarray.open_rasterio("C:/Users/Daniele/OneDrive/PhD/GIS + ESOM/GetSolarIrr/Solar_Irradiance/Yearly/Int_AreaSol_3.tif") as src:
----> 2 stats = zonal_stats(particles,src)
~\anaconda3\lib\site-packages\rasterstats\main.py in zonal_stats(*args, **kwargs)
38 The only difference is that ``zonal_stats`` will
39 return a list rather than a generator."""
---> 40 return list(gen_zonal_stats(*args, **kwargs))
41
42
~\anaconda3\lib\site-packages\rasterstats\main.py in gen_zonal_stats(vectors, raster, layer, band, nodata, affine, stats, all_touched, categorical, category_map, add_stats, zone_func, raster_out, prefix, geojson_out, boundless, **kwargs)
163 band = band_num
164
--> 165 with Raster(raster, affine, nodata, band) as rast:
166 features_iter = read_features(vectors, layer)
167 for _, feat in enumerate(features_iter):
~\anaconda3\lib\site-packages\rasterstats\io.py in __init__(self, raster, affine, nodata, band)
272 self.nodata = nodata
273 else:
--> 274 self.src = rasterio.open(raster, "r")
275 self.affine = guard_transform(self.src.transform)
276 self.shape = (self.src.height, self.src.width)
~\anaconda3\lib\site-packages\rasterio\env.py in wrapper(*args, **kwds)
449
450 with env_ctor(session=session):
--> 451 return f(*args, **kwds)
452
453 return wrapper
~\anaconda3\lib\site-packages\rasterio\__init__.py in open(fp, mode, driver, width, height, count, crs, transform, dtype, nodata, sharing, **kwargs)
244 or isinstance(fp, (os.PathLike, MemoryFile, FilePath))
245 ):
--> 246 raise TypeError("invalid path or file: {0!r}".format(fp))
247 if mode and not isinstance(mode, str):
248 raise TypeError("invalid mode: {0!r}".format(mode))
TypeError: invalid path or file: <xarray.DataArray (band: 1, y: 3000, x: 2000)>
[6000000 values with dtype=int32]
Coordinates:
* band (band) int32 1
* x (x) float64 7.6e+05 7.6e+05 7.6e+05 ... 7.8e+05 7.8e+05 7.8e+05
* y (y) float64 4.09e+06 4.09e+06 4.09e+06 ... 4.06e+06 4.06e+06
spatial_ref int32 0
Attributes: (12/15)
AREA_OR_POINT: Area
BandName: Band_1
RepresentationType: ATHEMATIC
STATISTICS_COVARIANCES: 8498387208.982427
STATISTICS_MAXIMUM: 1552768
STATISTICS_MEAN: 1286479.1959047
... ...
STATISTICS_SKIPFACTORY: 1
STATISTICS_STDDEV: 92186.69757065
_FillValue: -1
scale_factor: 1.0
add_offset: 0.0
long_name: Band_1
It seems an error related to the use of float64 or int32, but I can't understand how to make it work. Is there a way to do it? And, in general, what is the easiest way to calculate the average value of some pixels inside polygons? (Given in the same shapefile i have many polygons on which i have to perform the mean of the pixels)
It appears that the file path is not correct.
Maybe this?
"C:/Users/Daniele/OneDrive/PhD/GIS/ESOM/GetSolarIrr/Solar_Irradiance/Yearly/Int_AreaSol_3.tif"
or
"C:/Users/Daniele/OneDrive/PhD/GIS/" + "ESOM/GetSolarIrr/Solar_Irradiance/Yearly/Int_AreaSol_3.tif"
I am assuming that you want to concat both the paths together.