I am creating a uitable using GUIDE with 4 columns: 1st – Numeric, 2nd – Let Matlab choose,
3rd – Text, Editable, 4th – Logical, Editable.
When I run my GUI and try to mark the Logical checkbox I get this error: Warning: Table data is not editable at this location. Please click for more information.
I have tried to solve the problem and failed. Therefore, how can I fix it? I wish to check or uncheck them (the default selection should be checked).
Thanks.
Try this in the create function for your uitable:
set(yourUitableHandle, 'ColumnEditable', [0 1 1 1]);
If the problem persists, something in GUIDE is automatically changing that property for you. Likely on the Data section of property viewer for the uitable. Let me know if that doesn't fix it, and I'll give it another shot.
Related
I am using pgAdmin 4 along with postgreSQL 10 on Windows 10 and am trying to set some check constraints on one or more attributes of my table called 'parcels2007'. When I right click on 'parcels2007' and go to 'properties', I am seeing a constraints tab and then a 'Check' sub-tab. I clicked on it (see screenshot below).
and create a new check constraints based on attribute 'schdist' being within a list of pre-specified values. However, after I click 'Save' and open the first 100 rows and try to edit the 'schdist' attribute with something wrong, it does NOT throw any error (like it should instead) and it lets me change the field without issues.
Could you please help me understand what I might be doing wrong here and what else I could try?
Here you are talking about dialog save button or the save button on the toolbar?
- Query tool will do not validate any constraint by itself but once you click on Save button from toolbar Postgres should throw an error.
Ref: https://www.pgadmin.org/docs/pgadmin4/3.x/editgrid.html
(Check: The View/Edit Data Toolbar section)
Use can use the F6 button to save your changes.
So after selecting the View Data/View All Rows press F6 to save changes.
I have a table which consists of 17025 rows. When I try to display the table, the whole table displays. But I want it in small parts. How do I make it display in small parts.
Type more on at the MATLAB command prompt. Subsequent output will be paused after every screenful.
Documentation: https://www.mathworks.com/help/matlab/ref/more.html
I usually check my variables in these ways:
Suppose that we have a variable called A=rand(1000,1000).
1.we can display a part of A by calling A(127:130,241:243), to show the specific part of it.
>> A(127:130,241:243)
ans =
0.8152 0.0674 0.5609
0.1977 0.3906 0.6491
0.3288 0.1255 0.7478
0.9176 0.4253 0.5111
2.double click the name of the variable in the Workspace, so we could check it in Variables.
3.if your data only contain few columns, I recommend you to draw them in a figure and view them by dragging a Data Cursor in the picture.
SampleCode:
A=[1:1:200; 250:-1:51];
plot(A')
However, only the first option could display matrix on command window, but 2&3 is much faster since we don't know which part to display.
I have a uitable with 10 columns, which I'm populating from a db.
Now I want to know when the user choose a specific row. For example if the user chooses the 3rd record, I would like to get back the value 3, so then I could access the actual information to for example open that specific record from the path.
I found online that I would need findjobj.
I also think that the method should be implemented in here:
function uitable_CellSelectionCallback(hObject, eventdata, handles)
However I found a little information about how I should proceed.
Anyone had this problem or knows how to solve it?
When calling the CellSelectionCallback you can access the Indices property, which is a 2 x 1 array containing the row and column indices of the cell you have selected.
Therefore in your callback, use something like this:
row = eventdata.Indices(1)
col = eventdata.Indices(2)
and that should get you going.
In order to avoid callbacks, you can use app.UITable.Selection in the newer versions of MATLAB where app is your app object and UITable your uitable name
Currently I have a GUI in which once a 'Submit' button is pressed the drop menu which is left blank is then populated by a calculated value determined by the three other values.
I have successfully figured out how to grab all of the values using this logic:
temp=get(handles.FSTOPpopmenu,{'String','Value'});
fstop=temp{1}{temp{2}};
if (strcmp(fstop,'Select'))
fstop = 0;
else
fstop = str2num(fstop);
end
I just have two questions about this that I can not seem to find an answer for.
How would I go about updating the 'empty' drop menu to the calculated variable (the calculated variable will already be one of the possible values in the predetermined list)?
How would I go about presenting an error, say if I have an if statement checking that the amount of zeros in the array? Would a pop up box be sufficient?
Cheers.
As for your first question matlab's set command is what you're looking for. The documentation is here. You would probably need:
MyValueIndex = find(DropDownValues==NewValue);
switch handleToChange
case handles.handle1
set(handles.handle1,'Value',MyValueIndex);
case handles.handle2
set(handles.handle2,'Value',MyValueIndex);
otherwise
error('Uh oh!');
end
Note that MyValueIndex is the index of dropdown box values that you want. Which is found with a find command on the actual value.
Question two is more of an opinion question but I think that a pop-up box describing the problem is sufficient. Maybe add in a system beep for good measure!
Reference:
http://www.mathworks.com/matlabcentral/answers/22734-resetting-a-pop-up-menu-in-a-gui
http://www.mathworks.com/help/matlab/ref/find.html
http://www.mathworks.com/help/matlab/ref/switch.html
For a popupmenu uicontrol the Value property determines which element of the String property is currently being displayed. Get the String; compare its contents to the calculated variable to get the index; then set that index as the Value property. If the calculated variable is not currently in the String then add it to the String and then set the Value. (Note when comparing you need to compare numbers to numbers or string to strings, so you may need to do an appropriate data type conversion first).
Use an errordlg.
I have a data-grid and three column in it. one column is type of DataGridViewComboBoxCell, three items are in this grid combo box, now i have to invoke selection index changed event to change value according to combo value change in grid.
also help me to make a new event ....
please help...
thanks
I really can't understand your question.
But maybe these informations can help:
A ComboBoxColumn has always two kinds of controls. A presenting one (in most cases a label) which is individually for each row. And a editing one that will be shared for the whole column. So take a look into this documentation and the IDataGridViewEditingControl Interface.
Maybe these will give you a starting point on how to solve your problem.
In the Load event for the form, you need to get the cell that you want to add the handler to and cast it as a regular combo box. You can then add the event handler on SelectedIndexChanged, but it must be done programmatically, and depending on the language you are using.