Include legends based on column names in for loop
25 次查看(过去 30 天)
显示 更早的评论
Hi,
I have a loop which processes three tables. Each table has ten columns (in addition, each column includes column names). When I plot the three figures in the loop, I want to include legends which state the column name of each variable within the plot. I know how to make this manually by typing the legends in the Matlab code. However, since the column names are changing depending on table I want to perform this automatically in the script. My though is to use "Display" but I do not know how to apply this kind of approach. In terms of code procedure, I thought something similar to this (not working unfortunately):
vnames=Table_.Properties.VariableNames;
for v = 1:numTables
%Processing of the code
plot(Table_.Col1,Table_{:,3},'DisplayName',vnames(v))
legend show
end
Grateful for any advice.
采纳的回答
KSSV
2022-1-12
id = (1:10)' ;
x = rand(10,1) ;
y = rand(10,1) ;
z = rand(10,1) ;
T = table(id,x,y,z)
figure
hold on
for i = 2:4
plot(T.(1),T.(i),'DisplayName',T.Properties.VariableNames{i})
end
legend
0 个评论
更多回答(1 个)
Mathieu NOE
2022-1-12
hello
see my little demo below to use the table varibales names as legend
the csv data file is attached
clearvars
clc
%get the data from table
T = readtable('pH_Data.csv'); %Reads Table or CSV File
vnames=T.Properties.VariableNames; % {'DateAndTimeRun1'} {'Time_s_Run1'} {'Voltage_mV_Run1'} {'pHRun1'}
time = T.Time_s_Run1; % time (s)
data = table2array(T(:,3:end)); % data
plot(time,data);
lgstr = vnames(3:end); % use vnames to make legend strings
% legend strings convert underscore to blanks for better legend readability
for ck = 1:numel(lgstr)
tmp = char(lgstr(ck));
ind = strfind(tmp,'_');
tmp(ind) = ' ';
lgstr{ck} = tmp; % update
end
legend(lgstr);
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/860445/image.png)
另请参阅
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!