Matlab 在现有轴内显示新图像,不删除颜色栏
我正在开发一个GUI,该GUI通过创建多个GUI以及为每个GUI创建一个不可见的GUI进行初始化(这样做是为了使轴保持其预定义的属性)。将存储所有轴和颜色栏的控制柄 与UI的交互可能导致在任意一个轴上绘制图像。我希望通过适当设置所有颜色条的Matlab 在现有轴内显示新图像,不删除颜色栏,matlab,matlab-figure,colorbar,matlab-hg2,Matlab,Matlab Figure,Colorbar,Matlab Hg2,我正在开发一个GUI,该GUI通过创建多个GUI以及为每个GUI创建一个不可见的GUI进行初始化(这样做是为了使轴保持其预定义的属性)。将存储所有轴和颜色栏的控制柄 与UI的交互可能导致在任意一个轴上绘制图像。我希望通过适当设置所有颜色条的Visible属性,在任何给定时间只显示活动轴的颜色条 我对这种方法有一个问题,因为我正在使用更新我的轴,这会删除与轴关联的任何颜色栏,使存储的句柄无效 我的问题是:如何使用imagesc或image更新与颜色条关联的轴,而不删除颜色条? 下面是如何重现此问题
Visible
属性,在任何给定时间只显示活动轴的颜色条
我对这种方法有一个问题,因为我正在使用更新我的轴,这会删除与轴关联的任何颜色栏,使存储的句柄无效
我的问题是:如何使用imagesc
或image
更新与颜色条关联的轴,而不删除颜色条?
下面是如何重现此问题:
dbclear in newplot %// Needed for the code to be properly re-runnable
%// Create an example figure containing a colorbar:
figure(); imagesc(imread('cameraman.tif')); colorbar;
%// "Refreshing" the displayed image:
uiwait(msgbox('The image will now be refreshed. A breakpoint will be set in newplot.m'));
dbstop in newplot at 124 %// The line responsible for deleting the colorbar in R2015A/B
imagesc(imread('cameraman.tif'));
在newplot.m
中设置断点的行为:
cla(ax, 'reset', hsave);
令人惊讶的是,这是一种调用cla
(带有3个参数)的未记录方式,它保留了句柄位于hsave
中的对象
我有一些想法,假设色条删除是不可避免的(如果找不到“理智”的解决方案,我将继续考虑):
struct
的颜色栏。在imagesc
完成后创建新的颜色栏,然后迭代struct
的字段,并将所有属性指定给新的颜色栏对象findall(hFig,'type','colorbar')
检查“每隔一段时间”是否存在所有色条,或根据以下附录验证每个轴是否具有有效的ColorbarPeerHandle
。如果无效,请重新创建CB附录-色条/轴协会:
- 与特定轴相关的色条手柄
(在hg2中)可通过以下方式获得:hAx
- 与colorbar对象相关联的轴的句柄可以通过以下方式获得:
safeUpdateImage1
-基于使用hold
后通过在轴内创建新的图像
对象来规避cla(…)
。这适用于轴中不一定存在图像的情况
safeUpdateImage 2
-基于更新现有的图像
对象,执行以下操作。这适用于已存在与轴关联的色条和图像的情况。
function [] = Problem
dbclear in newplot %// Needed for the code to be properly re-runnable
%// Create an example figure containing a colorbar:
Img = imread('cameraman.tif');
figure(); imagesc(Img); hAx = gca; colorbar;
%// Refreshing the displayed image (comment/uncomment as needed):
switch questdlg('Please select an image update method:','Update method selection',...
'Broken','Safe1','Safe2','Safe1')
case 'Broken'
brokenUpdateImage(hAx,255-Img);
case 'Safe1'
safeUpdateImage1(hAx,255-Img);
case 'Safe2'
safeUpdateImage2(hAx,255-Img);
end
end
function brokenUpdateImage(hAx,newImg)
uiwait(msgbox('The image will now be refreshed. A breakpoint will be set in NEWPLOT'));
dbstop in newplot at 124 %// The line responsible for deleting the colorbar in R2015A/B
imagesc(newImg,'Parent',hAx);
end
% For cases when the only desired child is an Image and the axes contents are unknown
function safeUpdateImage1(hAx,newImg,imgType,imgUpdateFcn)
if nargin < 4 || isempty(imgUpdateFcn)
imgUpdateFcn = @imagesc;
end
if nargin < 3 || isempty(imgType)
imgType = 'Image';
end
if strcmp(hAx.NextPlot,'replace') %// Equivalent to checking "ishold == false"
hAx.NextPlot = 'add'; %// Equivalent to "hold on"
%// hCurrImgs = get(hAx,'Children'); %// Deletes all types of Children
hCurrImgs = findall(hAx,'type','Image'); %// Deletes only graphical objects of type
%// "matlab.graphics.primitive.Image"
for ind1=1:numel(hCurrImgs)
delete(hCurrImgs(ind1));
end
imgUpdateFcn(newImg,'Parent',hAx);
if strcmpi(imgType,'Image')
axis(hAx,'tight','ij');
%// 'tight' - XLimMode, YLimMode, and ZLimMode change to 'auto'. The limits automatic-
%// ally update to incorporate new data added to the axes. To keep the limits
%// from changing when using hold on, use axis tight manual.
%// 'ij' — Reverse direction. For axes with a 2-D view, the y-axis is vertical with
%// values increasing from top to bottom.
end
end
end
%// When it's known that the axes contains at least one Image:
function safeUpdateImage2(hAx,newImg,~,~)
%// <Input checking code>
hCurrImgs = findall(hAx,'type','Image');
%// <Optional code to decide which Image child to update>
hCurrImgs(1).CData = newImg; %// In this example, only update the "topmost" child
end
函数[]=问题
newplot%//中的dbclear需要正确地重新运行代码
%//创建包含颜色栏的示例图形:
Img=imread('cameran.tif');
图();imagesc(Img);hAx=gca;色条;
%//刷新显示的图像(根据需要进行注释/取消注释):
开关questdlg('请选择图像更新方法:','更新方法选择',。。。
‘断开’、‘安全1’、‘安全2’、‘安全1’)
案例“破碎”
brokenUpdateImage(hAx,255 Img);
案例“安全1”
安全更新图像1(hAx,255 Img);
案例“安全2”
安全更新图像2(hAx,255 Img);
结束
结束
函数brokenUpdateImage(hAx、newImg)
uiwait(msgbox('现在将刷新映像。将在NEWPLOT中设置断点');
newplot中的dbstop位于124%//负责删除R2015A/B中颜色条的行
imagesc(newImg,'Parent',hAx);
结束
%对于唯一需要的子对象是图像且轴内容未知的情况
函数safeUpdateImage1(hAx、newImg、imgType、imgUpdateFcn)
如果nargin<4 | |是空的(imgUpdateFcn)
imgUpdateFcn=@imagesc;
结束
如果nargin<3 | |为空(imgType)
imgType='Image';
结束
如果strcmp(hAx.NextPlot,'replace')%//相当于检查“ishold==false”
hAx.NextPlot='add';%//相当于“等等”
%//hCurrImgs=get(hAx,'Children');%//删除所有类型的子项
hCurrImgs=findall(hAx,'type','Image');%//仅删除类型为的图形对象
%//“matlab.graphics.primitive.Image”
对于ind1=1:numel(hCurrImgs)
删除(hCurrImgs(ind1));
结束
imgUpdateFcn(newImg,'Parent',hAx);
如果strcmpi(imgType,'Image')
轴(hAx,'tight','ij');
%//“紧密”-XLimMode、YLimMode和ZLimMode更改为“自动”。限制自动-
%//ally update以合并添加到轴的新数据。保持极限
%//在使用保持时,请使用轴紧手动进行更改。
%//“ij”-反向。对于具有二维视图的轴,y轴与轴垂直
%//值从上到下递增。
结束
结束
结束
%//已知轴至少包含一个图像时:
函数safeUpdateMage2(hAx,newImg,~,~)
%//
hCurrImgs=findall(hAx,'type','Image');
%//
hCurrImgs(1).CData=newImg;%//在本例中,仅更新“最顶层”子级
结束
您可以访问由imagesc
创建的图像对象的句柄吗?我想您可能可以直接操作它的CData
属性来更新图形。@mikkola-我可以访问轴的所有方面,包括子对象。我想不起来为什么我没有试过。。可能是因为这意味着我需要编写自己版本的imagesc
/image
,它通过修改XData
/YData
/CData
进行更新,并且没有cla
。如果它比我刚才描述的要简单得多,请随意将其作为一个解决方案发布(尽管我真的宁愿坚持使用现有的函数)…+1这似乎工作得很好。好的,j
hAx = hCb.Axes;
function [] = Problem
dbclear in newplot %// Needed for the code to be properly re-runnable
%// Create an example figure containing a colorbar:
Img = imread('cameraman.tif');
figure(); imagesc(Img); hAx = gca; colorbar;
%// Refreshing the displayed image (comment/uncomment as needed):
switch questdlg('Please select an image update method:','Update method selection',...
'Broken','Safe1','Safe2','Safe1')
case 'Broken'
brokenUpdateImage(hAx,255-Img);
case 'Safe1'
safeUpdateImage1(hAx,255-Img);
case 'Safe2'
safeUpdateImage2(hAx,255-Img);
end
end
function brokenUpdateImage(hAx,newImg)
uiwait(msgbox('The image will now be refreshed. A breakpoint will be set in NEWPLOT'));
dbstop in newplot at 124 %// The line responsible for deleting the colorbar in R2015A/B
imagesc(newImg,'Parent',hAx);
end
% For cases when the only desired child is an Image and the axes contents are unknown
function safeUpdateImage1(hAx,newImg,imgType,imgUpdateFcn)
if nargin < 4 || isempty(imgUpdateFcn)
imgUpdateFcn = @imagesc;
end
if nargin < 3 || isempty(imgType)
imgType = 'Image';
end
if strcmp(hAx.NextPlot,'replace') %// Equivalent to checking "ishold == false"
hAx.NextPlot = 'add'; %// Equivalent to "hold on"
%// hCurrImgs = get(hAx,'Children'); %// Deletes all types of Children
hCurrImgs = findall(hAx,'type','Image'); %// Deletes only graphical objects of type
%// "matlab.graphics.primitive.Image"
for ind1=1:numel(hCurrImgs)
delete(hCurrImgs(ind1));
end
imgUpdateFcn(newImg,'Parent',hAx);
if strcmpi(imgType,'Image')
axis(hAx,'tight','ij');
%// 'tight' - XLimMode, YLimMode, and ZLimMode change to 'auto'. The limits automatic-
%// ally update to incorporate new data added to the axes. To keep the limits
%// from changing when using hold on, use axis tight manual.
%// 'ij' — Reverse direction. For axes with a 2-D view, the y-axis is vertical with
%// values increasing from top to bottom.
end
end
end
%// When it's known that the axes contains at least one Image:
function safeUpdateImage2(hAx,newImg,~,~)
%// <Input checking code>
hCurrImgs = findall(hAx,'type','Image');
%// <Optional code to decide which Image child to update>
hCurrImgs(1).CData = newImg; %// In this example, only update the "topmost" child
end