Match name to axis value in chart

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Luca Re
Luca Re 2025-3-16
回答： Star Strider 2025-3-16
Ran in:
load('matlab_pl.mat')
stem(pl(:,2))
ff= find(pl(:,2));
ax = gca;
ax.XTickLabel=pl(ff,1);
hi, i see that the name axis not corrisponding on axis value <>0
and if possibile to avoid overlapping I would like to write the number under its own bar as in the example

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Star Strider
Star Strider 2025-3-16
Ran in:
Apparently, you want to put all the labels in the negative part of the y-axis.
Try this —
load('matlab_pl.mat')
stem(pl(:,2))
ff= find(pl(:,2));
ax = gca;
% ax.XTickLabel=pl(ff,1);
ylim('padded')
xval = ff;
tval = pl(ff,1);
yval = pl(ff,2);
lval = zeros(size(yval)); % Label Positions
lval(yval<0) = yval(yval<0); % Label Positions
lval(yval>0) = yval(yval>0)-max(yval(yval>0)); % Label Positions
text(xval, lval-0.02, compose('%d',tval), Horiz='center', Vert='top', FontSize=9, FontWeight='bold')
●
Make appropriate changes to get the result you want.
.

更多回答（1 个）

Image Analyst
Image Analyst 2025-3-16
Ran in:
How about this:
load('matlab_pl.mat')
x = pl(:, 1);
y = pl(:, 2);
stem(x, y, 'Filled', 'LineWidth', 2);
grid on;
xticklabels("")
bigStemIndexes = find(y ~= 0);
for k = 1 : length(bigStemIndexes)
xs = x(bigStemIndexes(k));
ys = y(bigStemIndexes(k));
if ys > 0
str = sprintf('%d\n', xs);
text(xs, ys, str, ...
'HorizontalAlignment','center',...
'VerticalAlignment','bottom', 'FontWeight','bold')
else
str = sprintf('\n%d', xs);
text(xs, ys, str, ...
'HorizontalAlignment','center',...
'VerticalAlignment','top', 'FontWeight','bold')
end
end
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