Dynamic colorbar change with window size corresponding with different data area
조회 수: 11 (최근 30일)
이전 댓글 표시
Hey guys~
When we zoom in or zoom out the figure, I wonder how to generate a colorbar dynamically show the current area, that is, a colorbar changing with current window.
you see, when i zoomed in the figure, the value of the colorbar did not change to show the cunrrent elevation of the area.
Thanks a lot!
댓글 수: 0
채택된 답변
Chunru
2021년 9월 9일
You can use the callback function of zoom to customize what you want.
z = peaks(200);
hi = imagesc(1:200, 1:200, z);
colorbar
h = zoom();
h.ActionPostCallback = @changecolorbar;
function changecolorbar(src, ~)
h = gco;
xl = xlim;
yl = ylim;
ix = find(h.XData>=xl(1) & h.XData<=xl(2));
iy = find(h.YData>=yl(1) & h.YData<=yl(2));
C = h.CData(ix,iy);
caxis([min(C(:)) max(C(:))]);
end
댓글 수: 3
Chunru
2021년 9월 9일
편집: Chunru
2021년 9월 9일
For dragging, you need to have the different callback function. The code above is just for zoom callback. You can do the similar by setting the pan callback.
z = peaks(200);
hi = imagesc(1:200, 1:200, z);
colorbar
h = zoom();
hpan = pan(gcf);
h.ActionPostCallback = @changecolorbar;
hpan.ActionPostCallback = @changecolorbar;
function changecolorbar(src, ~)
h = gco;
xl = xlim;
yl = ylim;
ix = find(h.XData>=xl(1) & h.XData<=xl(2));
iy = find(h.YData>=yl(1) & h.YData<=yl(2));
C = h.CData(ix,iy);
caxis([min(C(:)) max(C(:))]);
end
추가 답변 (0개)
참고 항목
카테고리
Help Center 및 File Exchange에서 Annotations에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!