I want to plot soil moisture against daytime values but I am getting "Do indexing is not supported for variables of this type".

SM_05 = table2array(all(:,7))/100; 
d = datetime(date.Var6,'Format','yyyy-MM-dd''T''HH:mm:ss''Z');
plot(d,SM_05.Var7);

The last code does not run.

Answer 1

[Image Analyst]

date is a function and does not have methods, like Var6(). And SM_05 is a column vector, not a table so there is no Var7 column anymore. Var7 was part of "all" but not part of the SM_05 matrix you converted the table into. Perhaps the "all" table has a column called date in which case you'd do

SM_05 = table2array(all(:,7))/100; % SM_05 is now a double matrix, not a table.
d = datetime(all.date.Var6,'Format','yyyy-MM-dd''T''HH:mm:ss''Z');
plot(d,SM_05, 'b.-', 'LineWidth', 2);

If you have any more questions, then attach your data (the "all" matrix) and code to read it in with the paperclip icon after you read this:

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