Copying matrices with row and column labels

[ErikG]

Hi,

I would like to copy a few matrices with row and column labels assigned with .setcollabels and .setrowlabels into another workfile. When I do this the labels are lost. How do I copy the matrices with the labels included?

Regards,
/Erik
Eviews 8.1 Jan 12 2015 build

[EViews Gareth]

Looks like you can't.

I'll try and make sure we get it in for EV9.

[ErikG]

Hi,
It appears you didn't manage to get this functionality into Eviews 9. It would be great if you could. It would also be supergreat if you could enable some functionality to access the information in the labels, like the following example:

For some matrix mX:


%rLabels = "A B"
mX.setrowlabels %rLabels

!Aindex = mX.rowlabelIndex("A")

[EViews Jason]

There is a problem when setting the labels the original matrix, the labels are not updated in the window. If you close the matrix and reopen it you will see the new labels. We will get this fixed.

However the original issue of copying the labels does work in 9. Please verify your copy of 9 is up to date.

We will add the requested feature to our list of things to investigate.

[ErikG]

OK, excellent. But my Eviews version is up to date (Eviews 9, May 20 build) and the labels still don't follow along when I copy matrices between workfiles:

Code: Select all

WfCreate C:\temp\test.wf1 u 1

Matrix(2,2) mX = 1
mX.setrowlabels A B
WfSave C:\temp\test.wf1

WfCreate C:\temp\testcopy.wf1 u 1
copy C:\temp\test.wf1::Untitled\mX
show mX


In the display window mX has row labels R1 and R2 when I run this program.

/Erik.

[EViews Jason]

I see. Apparently copying via the user interface works but not command.

We will get if fixed.

[ErikG]

Hi,

Is there, or will you sometime in the future, add functionality in Eviews so that the matrix row and column labels can be accessed?

along the lines of:
' MX is some labeled matrix
!Index1 = mx.rowlabelindex("GDP")

Regards,
Erik

[EViews Gareth]

We'll add it in the future.

[ErikG]

Thanks for adding the functionality of accessing rows and columns by their labels, very useful.

I've noticed a minor issue when copying matrices with row/column labels between workfiles: the labels are only copied when the source workfile is open. Compare the results below with and without the WfClose command:

Code: Select all

WfCreate(page=source) C:\temp\temp1.wf1 u 1
Matrix(3,3) mX = 3
mX.setrowlabels a b c
mX.setcollabels Anne Bob Ceasar

WfSave C:\temp\temp1.wf1
WfClose
WfCreate(page=NewPage) C:\temp\temp2.wf1 u 1
Copy C:\temp\temp1.wf1::source\mX
Show mX

[EViews Jason]

We will get it fixed in the next patch