将我的数据从字符数组转换为数组数组

Question

我正在读取plt文件，但发现将数据从字符数组转换为数组数组时出现问题。我尝试了str2num和str2double，reulst总是：[]或NaN。

[filename pathname] = uigetfile({'*.plt'},'File Selector'); 
fullpathname = strcat(pathname,filename); 
set(handles.text2,'string',fullpathname);%show full path name 
loaddata = fullfile(pathname,filename); 
fid = fopen(loaddata, 'r');% Read the entire file into memory 
contents = fread(fid,'*char')'; 
fclose(fid); 
contents = strrep(contents, ',', '.')% Replace `,` with `.` 
data = str2double(contents)% Now convert to numbers` 

ü在这里找到一些样本从内容：

+8.7595000000000000E+03  +0.0000000000000000E+00  
+0.0000000000000000E+00  +8.3581639938152974E-01 
+0.0000000000000000E+00  +4.6014153848539308E+01 
+4.6014153852568526E+01  +0.0000000000000000E+00 
+0.0000000000000000E+00  +8.3581639938152974E-01 
+0.0000000000000000E+00  +2.2902134241670819E+01` 

Answer 1

为了包含由空格分隔的多个数字的字符串转换，你需要使用str2num而不是str2double。

str2double需要单个数字作为字符串或单元格数组的字符串，如果您给它其他任何东西，将返回一个NaN。