Why does Matlab not recognize my .txt file as readable using csvread, and how do I fix it?

I am trying to use Matlab in order to quickly analyze data from a group of large Excel files, so my plan was to convert them into CSV format and use the csvread function in order to import and analyze them. However, when I try to run my code it give me the following error:

"Undefined function or variable 'TestWaveform1Edit'. Error in WaveformAnalysis (line 8)"

My code is as follows:

Data = csvread(TestWaveform1Edit, 0, 0, [1 0 rowBound 8]);

"TestWaveform1Edit" is a .txt file, formatted to be readable as a .csv file, as directly saving my excel workbooks as .csv files did not work. Has anyone had this issue, and what am I doing wrong in my implementation of the csvread function? I have yet to get it to work with any files, even smaller, simpler ones that I created outside of Excel.

Answer 1

[Adam]

Unless TestWaveform1Edit is a variable containing the name of your file then of course this will not work. The filename needs to be provided as a string/char e.g.

Data = csvread('TestWaveform1Edit', 0, 0, [1 0 rowBound 8]);

Whether that is enough on its own I don't know. I tend to prefer to provide a full path to most files I use, but if it is on your Matlab path then it should find it, though you probably need the extension on the end too.

[Jack Iverson]

I realized that, at least for my purposes, it was just as practical to manually import each csv into an array rather than automating the process in this way. However, I tried what I was doing before with your fix and it did work, so thank you for the help!