How to check if a path exists

I generate a path from a table using syntax that I expect and I want to be able to check if the generated path is valid. If it is not I want to add one to the index. If it is, continue on as usual.

Thanks in advance.

[Jan]

The question is not clear. What does "path from a table" mean? It is expected, that you use the syntay you expect. But for a discussion of occurring problems it would be useful if you post it here also. How coulöd we know which kind of "path" you mean and what how "valid" is defined. To which "index" can "one" be added (is "one" a "path" or 1.0?)? Even "continue as usual" has a meaning for you, but we cannot have the faintest idea of what you are talking about.

Answer 1

[dpb]

doc exist

[Jason Goad]

But thats only if the document is in the matlab path. It is not. It's in a path the user determines earlier in the script.

[Matt Kindig]

doc isdir ?

[dpb]

Works just fine if given the fully-qualified directory name the OP has just created -- example here--

>> exist('c:\temp','dir')
ans =
   7
>> exist('c:\junktemp','dir')
ans =
   0
>>

As Matt K points out,

exist('A','dir')==7

is the same as

isdir('A')

It had slipped my mind TMW has wrapped it; might as well use the "syntactic sugar" since it is already there.

Answer 2

[Rishikesh Agrawani]

I have valid path to the Desktop as C:\Users\rishi\Desktop in my Windows 10 system.

Here, I have tried to check for the existence of path elements like C:\, C:\Users (i.e. Users directory), C:\Users\rishi (i.e. rishi directory) etc.

     >> exist('C:\', 'dir')

     ans =

          7

     >> exist('C:', 'dir')

     ans =

          7

     >> exist('C:\Users', 'dir')

     ans =

          7

     >> exist('C:\Users\', 'dir')

     ans =

          7

     >> exist('C:\\Users\\', 'dir')

     ans =

          7

     >> exist('C:\\Users', 'dir')

     ans =

          7

     >> exist('C:\\User', 'dir')

     ans =

          0

     >> exist('C:\\Users\rishi', 'dir')

     ans =

          7

     >> exist('C:\\Users\RiShi', 'dir')

     ans =

          7

     >> exist('C:\\Users\rishi\Desktop', 'dir')

     ans =

          7

     >> exist('C:\\Users\rishi\Deskto', 'dir')

     ans =

          0

     >> exist('C:\\Users\\rishi\\Desktop\\', 'dir')

     ans =

          7

     >> 
     >> ret == 7

     ans =

       logical

        1

     >> if ret == 7
     disp('Directory exists')
     else
     disp('Directory does not exist')
     end
     Directory exists
     >>

[Mostafa Sanusi]

The path 'F:\' does not exist

Trying to get the MATLAB working but got this message. how to solve this issue

[Walter Roberson]

It sounds as if you do not have a drive label F: or a path mapped to F: either.

Does F: show up for you in Windows Explorer?