subplot of trigonometric function

Hi,

I want to make a 3x1 subplot (1 column and 3 row) for 3 trigonometric graphs

y = sin(x)

y= cos(x)

y = tan(x)

for x = 1:0.1:50

What code to do this? Thank you.

Answer 1

[Stephan]

A = @(x) sin(x);
subplot(3,1,1)
fplot(A,[1 50])
B = @(x) cos(x);
subplot(3,1,2)
fplot(B,[1 50])
C = @(x) tan(x);
subplot(3,1,3)
fplot(C,[1 50])

[Yung Xi]

Thank you. What code I use to change title for each graph, axis label, and line color?

[Steven Lord]

The Formatting and Annotation chapter in the documentation describes functions, tools, and techniques you can use to customize the appearance of your plots.

Answer 2

[dpb]

Another random, seemingly unrelated post brought this thread up again; another couple of ways with more recent tools as comparison...

First with the not-so-newfangled-any-more @doc:tiledlayout

funcs={'sin','cos','tan'};      % the desired functions
rnge=[1 50];                    % and plotting range
hTL=tiledlayout(3,1);           % create the tile layout in desired format
for f=funcs                     % iterate over each functions in turn
  nexttile                      % create the new axes to plot into
  hF=str2func(f{:});            % and the function to plot as handle
  fplot(hF,rnge)                % plot it
  title(f)                      % label the plot function
  ylabel('Magnitude')           % each y axis
  ylim;
end
xlabel('X')                     % one generic for x since all same...

Alternatively, since is a common x-axis, this would be an application for a stacked plot albeit one has to create the data explicitly instead of being able to use the functional form. That might be an enhancement; have to think about that a little...

YLIM=arrayfun(@(h)ylim(h),flip(hTL.Children),'UniformOutput',false);
YTIK=arrayfun(@(h)yticks(h),(hTL.Children),'UniformOutput',false);
figure
hF=cellfun(@str2func,funcs,'UniformOutput',false);
x=linspace(rnge(1),rnge(2));
y=cell2mat(cellfun(@(h)h(x).',hF,'UniformOutput',false));
hSP=stackedplot(x,y,'DisplayLabels',funcs,'XLabel','X');
set(hSP.AxesProperties,{'YLimits'},YLIM)                % make ylimits match

Unfortunately, the stacked plot default presentation isn't as pretty as what fplot() does on scaling so to make the two similar the above saved the ylim values from the first plot and applied them to the latter. I couldn't get the YTick values to match; it isn't an exposed property and handle-diving to the underlying axes showed the YLim values of [-1 1] for the top two but the tick labels wouldn't show up if set YTick to [-1 0 1] as in the tiled layout figure. All in all, not a pleasing result with stackedplot.