MODIS(MYD06_L2) file concatenation using xarray and dask

Question

I try to open multiple MODIS files (MYD06_L2) using xarray (xr.open_mfdataset).

I can open a single file or may be some files but i am not able to open many files or one day file as they have different dimensions.

d06 = xr.open_mfdataset(M06_2040, concat_dim= 'None', parallel=True)
['Cloud_Mask_1km'][:,:,:,0].values

Here M06_2040 is the directory of the files

I end up with the following error:

ValueError: arguments without labels along dimension 'Cell_Along_Swath_1km:mod06' cannot be aligned because they have different dimension sizes: {2040, 2030}

I dealt with the same thing parsing MODIS data and the two different swath sizes. My workaround was to get a list of all files with swath size 2030 and 2040 and load each list separately with open_mfdataset. — bwc
– bwc, Commented Jun 18, 2019 at 23:25

MRocklin · Accepted Answer · 2019-06-16 08:18:44Z

2

Correct. I believe that the xarray.open_mfdataset function expects that all dimensions other than the concatenated dimension are the same in all files.

answered Jun 16, 2019 at 8:18

MRocklin

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