Reading of Excel files in MATLAB_R2016 vs MATLAB_R2018

1 次查看（过去 30 天）

Thishan Dharshana Karandana Gamalathge 2018-6-20

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/406665-reading-of-excel-files-in-matlab_r2016-vs-matlab_r2018

评论： Walter Roberson 2018-6-21

image.png

When i am trying to extract data using the command [num_1,txt_1]= xlsread('test','Sheet1'), R2016 version considers the 1st row (which is column headers) too, despite it shows NaN. At the same time R2018 version correctly extract numbers starting the seconds row. So I cannot use the same program to extract data in two MATLAB versions. What is the reason?

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2018-6-21

在 MATLAB Online 中打开

Could you attach the .xls, just in case there is something odd about it?

The num output of xlsread() was always intended to omit all leading and trailing rows and columns that have no entries that can be interpreted as numbers. Like

nn = isnan(converted_data);
nnr = ~all(nn, 2);
sr = find(nnr, 1, 'first');
er = find(nnr, 1, 'last');
nnc = ~all(nn, 1);
sc = find(nnc, 1, 'first');
ec = find(nnc, 1, 'last');
num = converted_data(sr:er, sc:ec);