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MATLAB for Analyzing and Visualizing Geospatial Data

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Aris Setiawan
Aris Setiawan 2020-11-21
评论： Sarvani Panguluri 2020-11-25
I am following Loren Shure's video presentation on MATLAB for Analyzing and Visualizing Geospatial Data. But I have error message on second section (Select a subset of information) on the following:
ds.SelectedVariableNames = {'x_Date','lat','lon','depth','q_1','mw','q_2','mo','mo_auth'};
with message:
Error using matlab.io.datastore....
SelectedVariableNames must be a unique subset of VariableNames
Thank you.

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回答（1 个）

Sarvani Panguluri
Sarvani Panguluri 2020-11-24
Hi,
Can you specify which version of MATLAB you are using?
  2 个评论
Sarvani Panguluri
Sarvani Panguluri 2020-11-25
Hi,
I tried reproducing the issue and found that two of the possible reasons for the error could be, if the names in the SelectedVariableNames list does not exist in the main VariableNames.To find that,you can try
ds = datastore('isc-gem-cat.csv',"delimiter",",","NumHeaderLines",56)
ds.VariableNames
and check if the ds.VariableNames list has all these 'x_Date', 'lat', 'lon','depth','q_1','mw','q_2','mo','mo_auth' .
And unnecessary spaces before or after names (like , ' lat ',' lon ') could also lead to the error.Please Check if any of these is causing the error.

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