将datatip堆栈放在轴标签的顶部，并在轴位置进行更改后更新轴标签 [英] Put datatip stack on top of axis label and update axes label after a change was done on axes position
问题描述
此问题仅适用于unix matlab，Windows用户将无法复制它.
尝试创建位于y轴标签顶部的数据提示时遇到麻烦.下图说明了该问题:
I am having trouble while trying to create datatips in which are on top of the y axis label. The following picture illustrate the issue:
如您所见，在ylabel附近创建的数据提示将位于ylabel文本的底部，而效果则相反:数据提示位于轴标签的顶部.
As you can see, the datatips created close to the ylabel will get bottom to the ylabel text, while the desire effect is the opposite: the datatip to be on top of the axis label.
我使用以下(不是最少的)代码生成了图表，下面提供了该代码.您可以删除用% may be removed注释的行，或者甚至将datatip放在−78而不是循环上，以实现更快的测试脚本，但是如果某天有人希望它创建自定义datatips，我将保留此代码(在在这种情况下，请考虑同时查看 http://undocumentedmatlab .com/blog/controlling-plot-data-tips/):
I generated the plot with the following (not so minimal) code, which is available bellow. You may remove the lines commented with % may be removed, or even just put a datatip on −78 instead of a loop in order to achieve a faster testing script, but I leave this code if someone one day wants it to create custom datatips (in this case, consider seeing also http://undocumentedmatlab.com/blog/controlling-plot-data-tips/):
gradientStep = 1e-1;
x=-100:gradientStep:100; xSize=numel(x);
y=x.^3-x.^2;
figH=figure(42);
lineH=plot(x,y);
ylabel('YLabel (YUnits)','FontSize',16)
xlabel('XLabel (XUnits)','FontSize',16)
dcH=datacursormode(figH);
nTips = 20; % May change the loop for a datatip at x=-78.
for pos = round(linspace(2,xSize,nTips))
datatipH=dcH.createDatatip(lineH,...
struct('Position',[x(pos) y(pos)]));
orientation = 'top-left';
if pos>1
tipText{1} = 'The grandient here is: ';
tipText{2} = ['\Deltax:',sprintf('%d',x(pos)-x(pos-1)),' XUnits'];
tipText{3} = ['\Deltay:',sprintf('%d',y(pos)-y(pos-1)),' YUnits'];
else
tipText = 'Cannot calculate gradient here.';
end
bkgColor = [1 1 .5]; % May be removed.
fontSize = 12; % May be removed.
set(datatipH,'StringFcn',(@(~,~) tipText),'Orientation',...
orientation,'backGroundColor',bkgColor,'FontSize',...
fontSize,'Draggable','on'); % Only set text and orientation needed.
datatipTextBoxH=get(datatipH,'TextBoxHandle'); % May be removed.
uistack(datatipH,'top'); % Unfortunately makes no effect, since the ylabel handles is not at the axes children list
datatipTextBoxH=get(datatipH,'TextBoxHandle');
set(datatipTextBoxH,'HorizontalAlignment','left',...
'VerticalAlignment','top','Margin',0.02,'Interpreter',...
'tex','FontName','Courier','FontSize',fontSize); % May be removed.
end
uistack(get(gca,'YLabel'),'bottom') % Also makes no effect, for the same reason.
我尝试过:
- ui将所有数据提示堆叠到顶部，
- 将标签堆叠到底部(这两个标签都不起作用，因为ylabel手柄不在子手柄的轴上).
更新:实施@horchler解决方案后，出现了一个新问题:在缩放和平移轴时，轴标签也会移动.我为此找到了一个小解决方案，我更改了以下几个方面:
Update: After implementing the @horchler' solution, a new issue appeared: when zooming and panning the axes, the axes label would also move. I've found a small fix for that, I changed the following aspects:
- 将datatip z值设置为1，使其始终高于ylabel轴z.
- 在发生平移或缩放移动之后重新创建ylabel.为此，我实现了
localAxisUpdate函数，该函数获取旧的ylabel属性，将其替换为新的ylabel属性，并重置所有可设置的属性，但ylabel位置.为此，我使用了参考
- Set datatip z-value to 1, so that it will always be higher than ylabel axis z.
- Recreating the ylabel afterwards a pan or zoom movement occurs. For this, I implemented
localAxisUpdatefunction that get the old ylabel properties, replace it by a new one, and them reset all settable properties but the ylabel position. For this I used this reference
结果代码如下:
function test
gradientStep = 1e-1;
x=-100:gradientStep:100; xSize=numel(x);
y=x.^3-x.^2;
figH=figure(42);
lineH=plot(x,y);
ylabel('YLabel (YUnits)','FontSize',16)
xlabel('XLabel (XUnits)','FontSize',16)
dcH=datacursormode(figH);
%nTips = 20;
%for pos = round(linspace(2,xSize,nTips))
pos = find(x>-78,1);
datatipH=dcH.createDatatip(lineH,...
struct('Position',[x(pos) y(pos) 1]));
orientation = 'top-left';
if pos>1
tipText{1} = 'The grandient here is: ';
tipText{2} = ['\Deltax:',sprintf('%d',x(pos)-x(pos-1)),' XUnits'];
tipText{3} = ['\Deltay:',sprintf('%d',y(pos)-y(pos-1)),' YUnits'];
else
tipText = 'Cannot calculate gradient here.';
end
bkgColor = [1 1 .5]; % Light Yellow
fontSize = 12;
set(datatipH,'StringFcn',(@(~,~) tipText),'Orientation',...
orientation,'backGroundColor',bkgColor,'FontSize',...
fontSize,'Draggable','on');
datatipTextBoxH=get(datatipH,'TextBoxHandle');
datatipTextBoxH=get(datatipH,'TextBoxHandle');
set(datatipTextBoxH,'HorizontalAlignment','left',...
'VerticalAlignment','top','Margin',0.02,'Interpreter',...
%end
% Set changes due to zoom and pan to also use adaptativeDateTicks:
set(zoom(figH),'ActionPostCallback',...
@(~,~) localAxisUpdate(gca));
set(pan(figH),'ActionPostCallback',...
@(~,~) localAxisUpdate(gca));
end
function localAxisUpdate(aH)
% Fix axis label on top of datatip:
ylh = get(aH,'YLabel');
% Get original YLabel properties
ylstruct = get(ylh);
% Get settable fields:
yfieldnames=fieldnames(rmfield(set(ylh),'Position'))';
% Remove old label:
delete(ylh)
% Create new one:
ylh = ylabel(aH,'Dummy');
% Send it bottom:
ylpos = get(ylh,'Position');
set(ylh, 'Position', [ylpos(1:2) 0]);
% Reset new ylabel to old values:
for field=yfieldnames
field = field{1};
set(ylh,field,ylstruct.(field));
end
end
这种方法会产生不想要的效果，即ylabel会在图形上移动，直到释放鼠标按钮为止. 如何消除这种不良影响?
This approach creates an unwanted effect, which is the ylabel will move across the figure until the mouse button is released. How can I remove this unwanted effect ?
我认为解决方案或多或少地与用于更新坐标轴刻度的无用matlab解决方案，但是现在我需要ylabel postset属性的侦听器.有谁知道该怎么做?如果您是Windows用户，也可以尝试提供帮助，我需要做的只是在对图形进行更改(平移，缩放或其他操作)后重置ylabel的位置. >
I think the solution may be more or less as it was done in undocummented matlab solution for updating axes ticks, but now I would need the listener to the ylabel postset property. Does anyone knows how to do that? If you are a windows user, you can also try to help, all I need is to reset the position of the ylabel after a change (pan, zoom or whatever) is made on the figure.
推荐答案
A workaround that uses both linkaxes, so useful when zooming/panning multiple plots, and the visibilty of plots.
- 使用要绘制的功能创建一个轴(hax_1)，没有数据提示
- 使用要绘制的功能和数据提示创建轴(hax_2)，但不带有轴标签
- 将hax_2可见性设置为关闭"(这将绘制上面的数据提示第一个轴标签)
- 用linkaxes([hax_1 hax_2]，'xy')链接两个轴； (在其中一个轴上进行缩放和平移会在第二个轴上进行即时修改)
- create an axes (hax_1) with the function to be plotted, without the datatips
- create an axes (hax_2) with the function to be plotted AND the datatips but without the axes labels
- set hax_2 visibility to 'off' (this will plot the datatips above the first axes labels)
- link the 2 axes with linkaxes([hax_1 hax_2],'xy'); (zooming and panning on one of the axes will modify on the fly the second axes)
这给出了您的第一个代码(而不是已编辑的代码):
This gives with your first code (not the edited one):
gradientStep = 1e-1;
x=-100:gradientStep:100; xSize=numel(x);
y=x.^3-x.^2;
figH=figure(42);
plot(x,y);
ylabel('YLabel (YUnits)','FontSize',16)
xlabel('XLabel (XUnits)','FontSize',16)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% modification starts
hax_1 = gca;
hax_2 = axes('Position', get(hax_1,'Position'));
lineH = plot(x,y);
linkaxes([hax_1 hax_2],'xy');
set(hax_2,'Visible', 'off');
% modification ends
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
dcH=datacursormode(figH);
nTips = 20; % May change the loop for a datatip at x=-78.
for pos = round(linspace(2,xSize,nTips))
datatipH=dcH.createDatatip(lineH,struct('Position',[x(pos) y(pos)]));
orientation = 'top-left';
if pos>1
tipText{1} = 'The grandient here is: ';
tipText{2} = ['\Deltax:',sprintf('%d',x(pos)-x(pos-1)),' XUnits'];
tipText{3} = ['\Deltay:',sprintf('%d',y(pos)-y(pos-1)),' YUnits'];
else
tipText = 'Cannot calculate gradient here.';
end
bkgColor = [1 1 .5]; % May be removed.
fontSize = 12; % May be removed.
set(datatipH,'StringFcn',(@(~,~) tipText),'Orientation',orientation,'backGroundColor',bkgColor,'FontSize',fontSize,'Draggable','on'); % Only set text and orientation needed.
datatipTextBoxH=get(datatipH,'TextBoxHandle');
set(datatipTextBoxH,'HorizontalAlignment','left','VerticalAlignment','top','Margin',0.02,'Interpreter','tex','FontName','Courier','FontSize',fontSize); % May be removed.
end
我使用的是OSX 10.8.4，R2012b，并且遇到了与您相同的问题.在这里，所提出的解决方案在轴标签上方绘制了数据提示，并允许在不使用matlab未记录的功能的情况下进行缩放/平移.
I am on OSX 10.8.4, R2012b, and had the same issue as yours. Here, the proposed solution plots datatips above the axis labels and allow zooming/panning without making use of undocumented features of matlab.
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