MATLAB: Plotting data set, within a function, via a file list

Question

Hello All,

I have a situation where I need to input a dataset number to a function and have that function filter all the variables and plot a select few that pertain to that dataset. I have the filtering portion working correctly, but i can for the life of me figure out how to get it to plot.

Here is a really simplified version of what im trying to do in my base workspace lets say I have some time domain data

1_A={1 2 3;4 7 3};
2_A={1 2 3;5 1 9};
2_B={1 2 3;4 5 0};
plotThis(2)

and then a function

function []=PlotThis(DataSet);
fileList = evalin('base','who');

(do a whole bunch of stuff which looks at fileList and picks out data sets associated with dataSet#2 producing a new list of just those I want to operate on which woudl look like this)

dataSetName = {2_A;2_B} for instance
for i=1:length(dataSetName)
            evalin('base','plot(dataSetName{i})',dataSetName);

this is where my problem is, how to I get matlab to realize the string '2_A' in dataSetName is actually a variable in the base workspace?

end
end

Any and all help is appreciated

Answer 1

Wouldn't

plot(evalin('base', dataSetName{i}));

work? Assuming that 1_A, 2_A, etc. are actually vectors not cell arrays.

Alternatively:

evalin('base', sprintf('plot(%s)', dataSetName{i}));