[Matlab] function_memo

醉資心最近掛了，害我無法查我以前紀錄下來的 matlab 常用功能，只好也在blog備份一篇。

How can I select multiple points using the Data Cursor and export the coordinates to the MATLAB workspace?

來源: mathworks , datacursormode

steps -

1. plot the figure
2. click the Data Cursor button on the toolbar
3. click any point of your choice on the figure. if you wanna set multiple points, press Alt key.
4. right-click anywhere on the figure –> “export cursor data to workspace” –> enter variable name –>  enter

他會將cursor data存成structure，每個element有三個欄位。

• Target : 這筆cursor來自哪個figure (handle)
• Position: 座標
• DataIndex: 這筆cursor位於每個陣列的哪個位置

程式自動化的作法:

fig = figure;
z = peaks;
plot(z(:,30:35))
dcm_obj = datacursormode(fig);
set(dcm_obj,'DisplayStyle','datatip',...
'SnapToDataVertex','off','Enable','on')

% Now, click on the line to place datatip before executing the next line of code.

c_info = getCursorInfo(dcm_obj)