descending order with TableColumn still ascending

[Pierretherenard]

Default_sort is ascending, I am using descending but either this is not working or I am using the wrong kind of marker for default_sort

    from bokeh.layouts import row
    from bokeh.models import ColumnDataSource, WidgetBox, HoverTool
    from bokeh.models.widgets import  DataTable, TableColumn

    xu = [1,2,3]
    ttnwwrd = [90, 78, 150]
    dte = [100,200,300]
    #data = {'id':[1,2,3],'ttnwwrd':[3,4,6],}

    sourcet5 = ColumnDataSource(data=dict(x=xu,top=ttnwwrd,date=dte))
    p5 = figure(plot_width=500, plot_height=650, title="GJT Unique",
        tools = "pan,wheel_zoom,box_zoom,reset,hover,previewsave") #, x_axis_type = "datetime")
    # x = "x",
    glyph = VBar(x="x", top="top", bottom=-1, width=.5, fill_color="#b3de69")
    p5.add_glyph(sourcet5, glyph)
    people = ['un', 'deux','trois']
    sourcedt1 = ColumnDataSource(data=dict(people=people))

    columns1 = [
        TableColumn(field="people", title="People",  default_sort="descending"),

    ]
    dttbl1 = DataTable(source=sourcedt1, columns=columns1, width=220, height=130)
    wdgtdt1 = WidgetBox(dttbl1)
    hover = p5.select(dict(type=HoverTool))
    hover.tooltips = [("New words", "@top"),('date',' @date')]
    l5 = row(p5,wdgtdt1)
    show(l5)

I see:

but I should see:

Thank you
Pierre

[bryevdv]

Can reproduce. Not sure what the issue is since the plumbing appears to all be in order. Perhaps this is a bug in Slick Grid itself.

[bryevdv]

This should be fixed in #6180 @Pierretherenard if you have the ability to test the PR yourself it would be helpful.

[Pierretherenard]

If you have time to point me in the right direction i will do it.

[bryevdv]

@Pierretherenard Sure, there are some detailed instructions here

http://bokeh.pydata.org/en/latest/docs/dev_guide/setup.html#building-bokehjs

But the TLDR version is:

• Install npm (however is most convenient for your platform)
• clone the bokeh/bokeh repo
• run python setup.py install --build-js

Then when you run your examples make sure to use the BokehJS you just built by asking for inline resources with the BOKEH_RESOURCES environment variable, e.g. on *nix:

BOKEH_RESOURCES=inline python myscript.py

[Pierretherenard]

Will this disturb the Bokeh project that I am running now? I might not be ready in time for this one. It will definitively be tested after release since it is included in my project. I know you will be happy to have it tested before. I will search how to do step 2. The clone one.

[bryevdv]

@Pierretherenard I would suggest testing in a completely different environment (a conda environment or pip virtualenv) away from any existing "production" environments. I'm fairly certain the PR resolves the issue, so we will probably merge it in the next few days. If you don't have the ability to test before then, I understand.

[Pierretherenard]

I just installed 0.12.6. Was the resolution part of the release? This is not descending. Same test.
thank you

[bryevdv]

@Pierretherenard I think I might have misunderstood this issue. There was an error that actually caused columns to not sort correctly together in some cases, and I thought this was what you were referring to. (and that was what was fixed) I'm afraid you have misunderstood to purpose of default_sort (we probably need to make the docs clearer) Here is what the underlying slick grid library has to say:

As you can see, this parameter (which corresponds to Bokeh's default_sort) only controls what the sort order should be when a column header is first clicked. Before that, the data is presented in exactly the order that you supply it. So if you want to have it display differently initially, I think you will have to sort it yourself to that order in the CDS. The underlying slick grid library does not offer any other capability in this regard.

[Pierretherenard]

Cool. Thank you for the explanation.