HOW TO READ A .WRL FILE IN MATLAB?

Dear Sir,

I have written the following code to read a 3D .wrl file in MATLAB.

for i= 1:61

filename1=strcat(path1,strcat(a,int2str(i)));

filename=strcat(filename1,'_');

filename1=strcat(filename1,b(i));

filename1=strcat(filename1,'.wrl');

vrfile=fopen(filename1);

end

path1 is defined earlier as path1='D:\'

but when I am running the code I am geeting the following error:-

Error using fopen

First input must be a file name of type char, or a file

identifier of type double.

Error in Readobj_Gavabdb (line 27)

vrfile=fopen(filename1);

But instead of filename1 if i write 'D:\gavaDB\cara1_abajo.wrl' the program is running.

Please somebody tell me how to make the above code run. Kindly mail me at :- [e-mail]

Answer 1

[Cris LaPierre]

The most obvious error I see is that you change the varialbe name when you append the '_'. You save that result to filename. You then use filename1 in the next line, which means the underscore is not appearing in your final result.

You might want to consider using the function fullfile to create filename1. You can do it in a single line of code, and it will handle adding the slashes, etc. for you.

for i=1
    filename1 = fullfile("D:","gavaDB",["cara" + num2str(i) + "_" + "abajo" + ".wrl"])
end

filename1 = "D:/gavaDB/cara1_abajo.wrl"