MATLAB for Analyzing and Visualizing Geospatial Data

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.

Answer 1

[Sarvani Panguluri]

Hi,

Can you specify which version of MATLAB you are using?

[Aris Setiawan]

Matlab 2020b

[Sarvani Panguluri]

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.