Hiding columns?

[arbitrager44]

I have been hiding columns by setting the column size to zero:

self.columnwidths[c] = 0

But this often winds up with the hidden column headers showing up anyway, which looks ugly even if I stick it at the end of the table.

Looking at the code, it looks like you can set which columns are visible by setting visiblecols variable. However on closer inspection, I see that visiblecols is reset anytime you call redraw.

startvisiblecol, endvisiblecol = self.getVisibleCols(x1, x2)
self.visiblecols = list(range(startvisiblecol, endvisiblecol))

Anyway, is there any clean way to either set the visible column range or else have the column headers not show up for columns with a zero width?

[dmnfarrell]

visiblecols refers to the columns visible in the frame, so that only those are redrawn. That's why it's recalculated on every redraw. It's not to do with hiding specific columns. I would not change those values. I need to comment some of these variables..
I use a minimum column size > 0 so that if someone drags it down they can still see there's a column there. It's not a problem to make them zero which should be an option I agree but how do you suggest the user is to recover the hidden column.

[JayLi2018]

Hi, i think you can update the model of the table by removing this column in your data frame (if you are doing this with pandas)

…

On Sat, Aug 17, 2019 at 6:39 AM Arbitrager ***@***.***> wrote: I have been hiding columns by setting the column size to zero: self.columnwidths[c] = 0 But this often winds up with the hidden column headers showing up anyway, which looks ugly even if I stick it at the end of the table. Looking at the code, it looks like you can set which columns are visible by setting visiblecols variable. However on closer inspection, I see that visiblecols is reset anytime you call redraw. startvisiblecol, endvisiblecol = self.getVisibleCols(x1, x2) self.visiblecols = list(range(startvisiblecol, endvisiblecol)) Anyway, is there any clean way to either set the visible column range or else have the column headers not show up for columns with a zero width? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#146?email_source=notifications&email_token=AJGP5G6VGFSWFRZ4S567JODQE7POBA5CNFSM4IMPEZQ2YY3PNVWWK3TUL52HS4DFUVEXG43VMWVGG33NNVSW45C7NFSM4HFY3WIQ>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AJGP5G354VD25JCIALXNUGDQE7POBANCNFSM4IMPEZQQ> .

[dmnfarrell]

@JayLi2018 That would remove the column altogether. I think he just wants to hide it.

[arbitrager44]

Yeah basically I have some columns in the df that are needed for various functions but it would be prettier if the user never saw them. A simple example is where I want to show a numeric column with formatting, but I may need the numeric version for other reasons. What I do is create a column with the formatted version of the letters AND a column with the original number.

Like I say, setting column width to zero kind of works. but this winds up happening:

[dmnfarrell]

Yes the column header is drawn separately so you'd have to handle that aswell. Making hidden columns work is possible but a bit trickier than I thought at first.

[arbitrager44]

I think the best way to ultimately handle this is to have two df's, one for display and the other for calculations.