Analysis for GRACE data

Please how do i define my directories. This is a snippet of a code i am trying to run but it returns error each time i try to run it.. Please help !!!

My Error Message

Warning: Name is nonexistent or not a directory: C:\my_data 
> In path at 110
  In addpath at 87
  In Coastal_West_Africa at 5 
Warning: Name is nonexistent or not a directory: C:\my_data\GRACE_tut 
> In path at 110
  In addpath at 87
  In Coastal_West_Africa at 6 

The code

clc
clear all
close all
%% add paths- define the directory to your folders
addpath('C:\my_data');
addpath('C:\my_data\GRACE_tut');
%% Importing the Shapefiles  
M = m_shaperead('continent_polygon');
M1=m_shaperead('South_America_boundary');
M2=m_shaperead('South_America');
M3=m_shaperead('Amazon');

%% Load data
 load 'South_America_GRACE_Mascon_2002_2017.mat';
 
%% Extracting South America
Lat=Lat(:,1); Lon=Lon(1,:);Lon=Lon';

SAlat1=find(Lat<=16&Lat>=-56);
SAlon1=find(Lon<=-32& Lon>=-88); 
SA_lat=Lat(SAlat1);
SA_lon=Lon(SAlon1);

[per isakson]

Do these two folders exist on your hard disk?

'C:\my_data', 'C:\my_data\GRACE_tut'

[Ikechukwu Kalu]

No sir.. They dont..

I received the code from my friend like that but he is so busy and i cant even ask him about it.

Please what do i do?

[per isakson]

Wait until your friend is talkable.

I cannot guess

• what's in South_America_GRACE_Mascon_2002_2017.mat or
• how the function m_shaperead works

[Ikechukwu Kalu]

Alright Sir.. Thanks for your reply.. I am grateful

Answer 1

[Aayush Shah]

Hi Ikechukwu,

My understanding of your question is that you receive an error "Warning: Name is nonexistent or not a directory: C:\my_data" while accessing the data files of your project. The reason for this is that you're trying to access the file from a location where it doesn't exist. So to solve your issue, change the address present in the addpath function to the address where your project files are stored. If you want to get the address of the file, right-click on the project file and copy the location present there(assuming you're a windows user). Then you won't be getting the error.

For example, suppose your file is present in the downloads folder, then change the code to:

addpath('C:\Users\(yourusername)\Downloads\(yourfilename)');

This would solve your issue.

[Ikechukwu Kalu]

Alright.. This is perfect and it worked.. Thank you so much