Explicitly numbered string?
显示 更早的评论
Hi,
How do I explicitly define a string with numbering? Look at the example below. Suppose "numbers" are unknown and I want to name the figures Q1, Q2 etc.
numbers=3;
fname={'Q1' 'Q2' 'Q3'};
for i=1:numbers
if i==1
x = -2*pi:0.01:2*pi;
elseif i==2
x = -3*pi:0.01:3*pi;
else
x = -4*pi:0.01:4*pi;
end
y = sin(x);
h=figure
plot(x,y);
print(h,'-dpng',fname{1,i});
end
回答（2 个）
Guillaume
2016-2-28
fnames = cell(1, numbers);
for i = 1:numbers
fname{i} = sprintf('Q%d', i);
end
Or as a one-liner:
fnames = cellfun(@(n) sprintf('Q%d', n), 1:numbers, 'UniformOutput', false);
Note that the format string of sprintf is very flexible. If you had more than 10 numbers and wanted to generate: Q01, Q02, ..., Q10, etc.:
sprintf('Q%02d', i)
Azzi Abdelmalek
2016-2-28
numbers=3;
fname=genvarname(repmat({'Q'},1,numbers),'Q')
for ii=1:numbers
x = -(ii+1)*pi:0.01:(ii+1)*pi;
y = sin(x);
h=figure
plot(x,y);
print(h,'-dpng',fname{ii});
end
1 个评论
Guillaume
2016-2-28
While genvarname would work in this case, it's not for generating abritrary strings, only valid variable names. The set of valid filenames is much greater than the set of valid variable names.
类别
在 帮助中心 和 File Exchange 中查找有关 String 的更多信息
产品
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
Translated by 
