error with prepare_graph_inputs

[adamfreedman]

after running through the workshop jupyter notebook without a problem, I modified the notebooks to run on our data ... provisionally using, for testint purposes, a simple "outer" file that defines a rectangle enclosing all of our sampling sites buffered by 0.25 degrees. the resulting error is as follows:

AssertionError                            Traceback (most recent call last)
File <timed exec>:7

File [~/miniforge3/envs/feems/lib/python3.8/site-packages/feems/utils.py:107](http://localhost:8888/lab/tree/~/miniforge3/envs/feems/lib/python3.8/site-packages/feems/utils.py#line=106), in prepare_graph_inputs(coord, ggrid, translated, buffer, outer)
    104     grid.append((v[0], v[1]))
    105 grid = np.array(grid)
--> 107 assert grid.shape[0] != 0, "grid is empty changing translation"
    109 # un-translate
    110 if translated:

AssertionError: grid is empty changing translation

grid_path does in fact correctly point to "grid_100.shp" that is part of the feems repo. my understanding is the grid is global, so the fact that my x,y coordinates are in Central Africa should be irrelevant correct? Fwiw, the *coord file was the same that I'd used with eems for another project, i.e x (long) 1st column, y (lat) 2nd column. any guidance would be appreciated

[adamfreedman]

I should clarify, that I initially ran "without a problem" on the example data from Schweizer et al. 2015

[VivaswatS]

Hi @adamfreedman, you're correct on all counts here. Can you try the same code but without specifying an outer file and letting FEEMS choose it for you?
outer, edges, grid, _ = prepare_graph_inputs(coord=coord, ggrid=grid_path, translated=False, buffer=1, outer=None)

If this works, then there might be something wrong with the outer file you specified