Re: [Matplotlib-users] too many values to unpack with a bar chart

[Benjamin R. <ben...@ou...>]

On Wednesday, January 26, 2011, C M <cmp...@gm...> wrote:
> I usually do this for line graphs with markers:
>
>     line, = self.subplot.plot_date(dates,data)
>
> along with some keywords to tweak the plot.  I then add line to a
> dictionary to keep track of it:
>
>     self.line_to_data_dict[line] = self.activity
>
> But today I tried this with a bar chart, just changing plot_date to
> bar and renaming the "line," to "bars,":
>
>     fake_data = [2,2,5]
>     bars, = self.subplot.bar(fake_data, fake_data )
>
> This gave me the error:  ValueError:  too many values to unpack.
>
> OK, so if I removed the comma from "bars," so it is just "bars", it
> goes through but then I cannot add it to my dictionary--I get:
>
>> TypeError: list objects are unhashable
>
> Help in understanding this and a better approach would be helpful.  Thanks,
> Che
>

Just a thought, are you trying out the new legend code?  Could you do
a print of the type for bars?

Ben Root