Cannot CD to C Error

I am trying to use the information already created in an Excel document to create a Plot. The location is taken directly from the properties of the Excel file but I keep getting this error. I have been trying for a while to figure this out with no luck. Any ideas what could be wrong?

[Rik]

What does exist return for this string?

Answer 1

[OCDER]

Does that directory exist?

 C:\Users\Anthony\Desktop\220 Lab\Intro

To check

exist('C:\Users\Anthony\Desktop\220 Lab\Intro', 'dir')

If it returns 0, that directory does not exist. You cannot change to a directory that does not exist.

Also, usage of cd change directory should be minimized, as that really is just for you to use to navigate folder while coding - not to be used in actual programming runs, unless your program is specifically designed to change user folders.

Based on what you want to do, try this:

 %Let's you choose the file
 [FileName, FilePath] = uigetfile('Intro.xls*', 'Open Excel file.');
 if isnumeric(FileName)
     error('No file was selected');
 end

 %Or you could just start here, but define 
 %FilePath = 'C:\Users\Anthony\Desktop\220 Lab\Intro' 
 %FileName = 'Intro.xlsx'

 FullFileName = fullfile(FilePath, FileName); %assemble full file path + name
 Data = xlsread(FullFileName, 1, 'A2:A16'); %DO NOT do "load = " to replace load
                                               %load is built-in matlab function!
 Def = xlsread(FullFileName, 1, 'B2:B16'); 
 plot(Data, Def)  %lowercase plot, not "Plot"

[Anthony Voccia]

Thanks! I was going off what the TA wrote in lab. Just need to clean up the labels and this will be good to go

[OCDER]

Make sure your xlsread actually takes the full file name as input.

xlsread('Intro', ...) ==> xlsread(fullfile(FilePath, FileName), ...)

[Anthony Voccia]

Would that look like

      data = xlsread(fullfile('C:\Users\Anthony\Desktop\220 Lab\Intro', 'Intro.xlsx'),('Intro',1,'A2:A16'))

[OCDER]

 FilePath = 'C:\Users\Anthony\Desktop\220 Lab\Intro' 
 FileName = 'Intro.xlsx'
 FullFileName = fullfile(FilePath, FileName);
 Data = xlsread(FullFileName, 1, 'A2:A16');