How do I resolve CAT arguments dimensions, which are not consistent, when using cell2mat command?

3 次查看（过去 30 天）
Brad
Brad 2013-3-25
I got a strange problem related to the reading in of space delimited text files. I’ve been attempting to read in several hundred blocks of data that look like this;
NFL58 23Mar2012 Show 2 1 01 0000000001 Low
001 25.187466 156.162447 21578.188 97.134234 stops AAAAA 1 A10A
1.100000e-01 1.200000e-01 1.300000e-01 1.400000e-01 1.500000e-01 1.600000e-01 1.700000e-01 1.800000e-01 1.900000e-01
2.100000e-01 2.200000e-01 2.300000e-01 2.400000e-01 2.500000e-01 2.600000e-01 2.700000e-01 2.800000e-01 2.900000e-01
3.100000e-01 3.200000e-01 3.300000e-01 3.400000e-01 3.500000e-01 3.600000e-01 3.700000e-01 3.800000e-01 3.900000e-01
4.100000e-01 4.200000e-01 4.300000e-01 4.400000e-01 4.500000e-01 4.600000e-01 4.700000e-01 4.800000e-01 4.900000e-01
5.100000e-01 5.200000e-01 5.300000e-01 5.400000e-01 5.500000e-01 5.600000e-01 5.700000e-01 5.800000e-01 5.900000e-01
6.100000e-01 6.200000e-01 6.300000e-01 6.400000e-01 6.500000e-01 6.600000e-01 6.700000e-01 6.800000e-01 6.900000e-01
7.100000e-01 7.200000e-01 7.300000e-01 7.400000e-01 7.500000e-01 7.600000e-01 7.700000e-01 7.800000e-01 7.900000e-01
8.100000e-01 8.200000e-01 8.300000e-01 8.400000e-01 8.500000e-01 8.600000e-01 8.700000e-01 8.800000e-01 8.900000e-01
9.100000e-01 9.200000e-01 9.300000e-01 9.400000e-01 9.500000e-01 9.600000e-01 9.700000e-01 9.800000e-01 9.900000e-01
002 25.287466 156.162447 21578.288 97.234234 Done BBBBB 2 A10B
1.120000e-01 1.200000e-01 1.300000e-01 1.400000e-01 1.500000e-01 1.600000e-01 1.700000e-01 1.800000e-01 1.900000e-01
2.120000e-01 2.200000e-01 2.300000e-01 2.400000e-01 2.500000e-01 2.600000e-01 2.700000e-01 2.800000e-01 2.900000e-01
3.120000e-01 3.200000e-01 3.300000e-01 3.400000e-01 3.500000e-01 3.600000e-01 3.700000e-01 3.800000e-01 3.900000e-01
4.120000e-01 4.200000e-01 4.300000e-01 4.400000e-01 4.500000e-01 4.600000e-01 4.700000e-01 4.800000e-01 4.900000e-01
5.120000e-01 5.200000e-01 5.300000e-01 5.400000e-01 5.500000e-01 5.600000e-01 5.700000e-01 5.800000e-01 5.900000e-01
6.120000e-01 6.200000e-01 6.300000e-01 6.400000e-01 6.500000e-01 6.600000e-01 6.700000e-01 6.800000e-01 6.900000e-01
7.120000e-01 7.200000e-01 7.300000e-01 7.400000e-01 7.500000e-01 7.600000e-01 7.700000e-01 7.800000e-01 7.900000e-01
8.120000e-01 8.200000e-01 8.300000e-01 8.400000e-01 8.500000e-01 8.600000e-01 8.700000e-01 8.800000e-01 8.900000e-01
9.120000e-01 9.200000e-01 9.300000e-01 9.400000e-01 9.500000e-01 9.600000e-01 9.700000e-01 9.800000e-01 9.900000e-01
My intent is to read all the data blocks (regardless of size) into cell arrays for future processing. Unfortunately, I’ve never tried reading in non-rectangular text files until now. I did some searching on the MATLAB WEB site for a sample of how this can be done. What I am trying to do is very similar to an example on the Mathworks site under examples for TEXTSCAN (Reading Arbitrary Format Text Files with TEXTSCAN). I ran the sample code with the test80211.txt file, and got the same results as the example. So I tried this approach with the data blocks shown above. But I keep getting the following error;
??? Error using ==> cat
CAT arguments dimensions are not consistent.
Error in ==> cell2mat at 81
m{n} = cat(2,c{n,:});
Error in ==> TestScript2 at 44
Data{Block,1}=cell2mat(InputText);
I began stepping through the code and noticed it ran good for the first data block, and the data variable had the 9x9 matrix I expected. However, I keep getting the above error on the 2nd block of data – at Data{Block,1}=cell2mat(InputText);
Here are the commands I’m utilizing (very similar to the example):
% Open text file
fid = fopen('BlockTypeTextTestFile.txt','r');
% Read Header Row (Row 1) as a string delimited by a carriage return
InputText=textscan(fid,'%s',1,'delimiter','\n');
Headerline=InputText{1};
disp(Headerline);
% Initialize The Block Counter
Block = 1;
% Initialize the s variable
s = '';
% Lets read in each data block using TEXTSCAN for each line in the file.
while ~feof(fid)
% Read row 2 delimited by a carriage return
InputText=textscan(fid,'%f %f %f %f %f %5.0s %5.0s %f %5.0s',1,'delimiter','\n');
% Initialize the Number Of Columns Counter
NumCols=InputText{1};
% Create format string based on block number
FormatString=repmat('%f %f %f %f %f %f %f %f %f',1,NumCols);
% Read 9 X 9 matrix data (all 9 lines) delimited by a carriage return
InputText=textscan(fid,FormatString,9,'delimiter','\n');
% Convert to numerical array from cell
Data{Block,1}=cell2mat(InputText);
%Size Of Table
NumRows,NumCols]=size(Data{Block});
% Increment the Block Counter
Block = Block+1;
% Ensure we're at the end of the file
% where, isempty determines if next line is empty
% and strvcat will concatenate strings vertically.
% Close the figure after it appears as it is no longer needed.
if isempty(line),break, end
s = strvcat(s,line);
end
% Dispaly contents of s to the screen
disp(s)
%Close Text File
fclose(fid);
I’m stumped as to what could be causing the error. I've attempted to change the delimiter of the TEXTSCAN command to ' ' - no help.
The only thing I’ve noticed is that in the Workspace window, the FormatString value suddenly doubles from '%f %f %f %f %f %f %f %f %f' to '%f %f %f %f %f %f %f %f %f%f %f %f %f %f %f %f %f %f'
Any ideas as to what the source of the problem could be? Thank you. Brad.

请先登录，再回答此问题。

采纳的回答

Walter Roberson
Walter Roberson 2013-3-25
I'm not sure why you are setting the format according to NumCols which is the first value you read in in the sub-block header line? Isn't that value just the block number, not an indicator of how many values per line you expect to get?

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Data Import and Export 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by