Extract range from table

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Anna 2021-1-12

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https://ww2.mathworks.cn/matlabcentral/answers/714758-extract-range-from-table

评论： Anna 2021-1-15

Hello,

I imported an existing excel sheet and now want to make a new variable which holds only certain columns of that sheet that I need (in my case participant IDs, randomisation conditions, etc., i.e. row 1, row 49, etc.). I have specified the ranges as variables (see below) but where do I put the range into the code?

% set path to where the session 1 protocol spreadsheet is
% datapath, filename, and sheet are already defined in my code
% import data (spreadsheet with subject overview) 
% tildes are used for placeholder arguments
[~,~,Raw]=xlsread(fullfile(datapath,filename),sheet);
% make a table from the Raw cells
% datafile = cell2table(Raw)
Raw = cell2table(Raw);
% we only need certain columns: A=subject ID, AW=randomisation,..., so define needed columns and general range
% e.g. variable = data(line_from:line_to,column)
Subject_ID = Raw(2:end,1); 
TT_randomisation = Raw(2:end,49);
Snack_weights = Raw(2:end,59:76);
Height = Raw(2:end,28)
Weight = Raw(2:end,27)
range = [Subject_ID,Height,Weight,TT_randomisation,Snack_weights];

Thank you!

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Anna 2021-1-15

So, readtable seems to be the better option. I imported the spreadsheet, choosing one specific sheet:

T=readtable(fullfile(datapath,filename), 'Sheet', 'sheet_name')

I want to add a range with the 'Range' name-value pair, but the problem is that I only need specific columns (e.g. column 1, 5, 10-15) but I can only specify one range with this name-value pair. One site suggests to use SpreadsheetImportOptions instead but I don't understand either how to tell it to make a table with only the specific columns I need.

Anna 2021-1-15