Error in running the code

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Aya Emam
Aya Emam 2023-1-30
评论： Aya Emam 2023-1-30
Any one can help me
  5 个评论
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John D'Errico
John D'Errico 2023-1-30
Now that you have actually shown some code, there is still a problem. The error message tells us that your file is not what you think it contains. But we have no idea what the file truly does contain.
Finally, you need to understand that posting a PICTURE of your code is not useful. That forces someone who might help you to ttype in your code from the screen.
Is there a good reason why you want to make it more difficult to get help? Paste in the actual code. Attach the file so that someone can understand what is inside the file that you could not read.
Aya Emam
Aya Emam 2023-1-30
clear all; %#ok<CLALL>
close all;
clc
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
A=dlmread('Book5 measured - Copy (2).csv');
x=A(:,1); % it contains frequency column
y=A(:,2); % it contains Peak gain for phi=0 and theta=90 coloumn which is 2nd column.
plot(x,y,'-r','LineWidth',1,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','g',...
'MarkerSize',13)
hold on
This the code
and This is error
Trouble reading 'Numeric' field from file (row number 1, field number 1) ==> "2.000000000000000E+009
","-1.893568374385968E+001 "\n
Error in comaesion11 (line 5)
A=dlmread('Book5 measured - Copy (2).csv');
and this is the excel sheet

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回答（1 个）

Jan
Jan 2023-1-30
dlmread cannot handle the double quotes around the numbers. Use modern import functions instead, e.g. readmatrix(). The option 'TrimNonNumeric' might be useful.
  1 个评论
Aya Emam
Aya Emam 2023-1-30
can you give me example for the read matrix
this is the code
clear all; %#ok<CLALL>
close all;
clc
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
A=dlmread('Book5 measured - Copy (3).csv');
x=A(:,1); % it contains frequency column
y=A(:,2); % it contains Peak gain for phi=0 and theta=90 coloumn which is 2nd column.
plot(x,y,'-r','LineWidth',1,...
'MarkerEdgeColor','k',...
'MarkerFaceColor','g',...
'MarkerSize',13)
hold on

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