what is wrong with my code?
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
yanjie qi
el 28 de Feb. de 2016
Comentada: Walter Roberson
el 1 de En. de 2018
function [lxw,XO,wl]= HSIFileOpen(lxwfilepath,HSIfilepath)
%HSIFileOpen函数用来打开高光谱影像数据
fp1 = fopen(lxwfilepath,'r');
fp2 = fopen(HSIfilepath,'r');
lxw=fread(fp1,'%f');
bands = lxw(1);%波段数
datatype = lxw(2);%字节数
samples = lxw(3);%列数
lines = lxw(4);%行数
columns = samples*lines;%像元个数
switch lxw(5)%数据格式
case 0
interleave = 'bsq';
case 1
interleave = 'bil';
case 2
interleave = 'bip';
case 3
interleave = 'mat';
end
%读取高光谱数据二进制文件
switch datatype
case 1
precision = 'uint8';
case 2
precision = 'uint16';
case 4
precision = 'float32';
end
if interleave == 'bsq'
XO = fread(fp2,[columns,bands],precision);
XO = XO';
elseif interleave == 'bil'
tmp = fread(fp2,[samples,bands*lines],precision);
XO = zeros(bands,columns);
for i=1:bands
for j=1:lines
XO(i,((j-1)*samples+1):j*samples) = tmp(:,(j-1)*bands+i);
end
end
elseif interleave == 'bip'
XO = fread(fp2,[bands,columns],precision);
elseif interleave == 'mat'
XO = fread(fp2,[bands,columns],precision);
end
b = lxw(6);%该参数判断有没有波长数据
if b==1
token = strtok(HSIfilepath,'.');
wavelengthpath = strcat(token,'.wl');
fp3 = fopen(wavelengthpath,'r');
wl=fscanf(fp3,'%f');
%关闭文件
fclose(fp3);
else
wl = 0;
end
fclose(fp1);
fclose(fp2);
[EDITED, Jan, copied from tags:]
but the error is
input argument "lxwfilepath" is undefined.
error in ==> hsifileopen at 6 fp1 = fopen(lxwfilepath">
1 comentario
Jan
el 28 de Feb. de 2016
Please post the complete error message in your question, not a partial copy in the tags. Thanks.
Respuesta aceptada
Jan
el 28 de Feb. de 2016
Editada: Jan
el 28 de Feb. de 2016
Guessing that the line 6 is this:
fp1 = fopen(lxwfilepath,'r');
I assume, that you call your function without defining input arguments. It has to be called like this:
[lxw, XO, wl] = HSIFileOpen(lxwfilepath, HSIfilepath)
Note: This will work in your case, because interleave has 3 characters in all cases:
if interleave == 'bsq'
But prefer strcmp for the comparison of strings:
if strcmp(interleave, 'bsq')
3 comentarios
Más respuestas (3)
yanjie qi
el 28 de Feb. de 2016
Editada: Walter Roberson
el 1 de Mzo. de 2016
3 comentarios
Walter Roberson
el 1 de Mzo. de 2016
That code does not protect against the possibility of unexpected content in the data file. That code only defines the variable named interleave if a particular location in the file contains 0, 1, 2, or 3. At the very least the code should have an "otherwise" on the switch statement that generates an error saying that the file is not in the expected format.
Walter Roberson
el 1 de Mzo. de 2016
You should be considering using http://www.mathworks.com/matlabcentral/fileexchange/29344-read-medical-data-3d from the File Exchange, as it reads .raw files with .hdr . It is tested code.
2 comentarios
Mehdi Mosafer
el 1 de En. de 2018
I think this issue is because of using non-ASCII alphabets for naming a folder in which the data file is located.
1 comentario
Ver también
Categorías
Más información sobre Logical en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!