RE: [flexcoders] Re: CategoryAxis category order
Thanks, Amy. The nature of how we use charts would make a solution based around
modifying the axis a lot simpler, but I may need to fall back to this approach.
I think the problem is that an axis is unaware of its orientation, and
left-to-right is isomorphic with bottom-to-top (to represent a cartesian chart
with the standard x and y dimensions). This makes sense for numeric and
datetime axes, but it seems counter-intuitive for a category axis. I wonder if
I can monkey around with AxisBase.describeData()...
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Amy
Sent: Sun 1/11/2009 5:52 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: CategoryAxis category order
--- In flexcoders@yahoogroups.com, Maciek Sakrejda msakre...@...
wrote:
When I have a data provider like
[ { category : foo, val : 1 }, { category : bar, val : 2 },{
category :
baz, val : 3 } ]
and graph this on a BarChart as category vs. val, the values are
graphed
bottom to top. That is, category foo is on the bottom, then bar, then
baz at the top. Is there a way to reverse this order, and have the
categories as foo, bar, baz bottom-to-top without having to re-sort
the
dataprovider (it is used elsewhere) or copy the data in reverse order
(I'd rather extend the charting components to do the right thing)?
How bout just creating a ListCollectionView that points to the same
data and sort that?
winmail.dat
RE: [flexcoders] Re: CategoryAxis category order
Hmm. No dice. Overriding describeData() to return
super.describeData().reverse() does nothing... Maybe I'll go the
ListCollectionView route.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Maciek Sakrejda
Sent: Sun 1/11/2009 2:47 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: CategoryAxis category order
Thanks, Amy. The nature of how we use charts would make a solution based around
modifying the axis a lot simpler, but I may need to fall back to this approach.
I think the problem is that an axis is unaware of its orientation, and
left-to-right is isomorphic with bottom-to-top (to represent a cartesian chart
with the standard x and y dimensions). This makes sense for numeric and
datetime axes, but it seems counter-intuitive for a category axis. I wonder if
I can monkey around with AxisBase.describeData()...
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Amy
Sent: Sun 1/11/2009 5:52 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: CategoryAxis category order
--- In flexcoders@yahoogroups.com, Maciek Sakrejda msakre...@...
wrote:
When I have a data provider like
[ { category : foo, val : 1 }, { category : bar, val : 2 },{
category :
baz, val : 3 } ]
and graph this on a BarChart as category vs. val, the values are
graphed
bottom to top. That is, category foo is on the bottom, then bar, then
baz at the top. Is there a way to reverse this order, and have the
categories as foo, bar, baz bottom-to-top without having to re-sort
the
dataprovider (it is used elsewhere) or copy the data in reverse order
(I'd rather extend the charting components to do the right thing)?
How bout just creating a ListCollectionView that points to the same
data and sort that?
winmail.dat
RE: [flexcoders] Re: CategoryAxis category order
Ok, so it looks like a (reasonably simple) way to do this is to set the
dataProvider of the CategoryAxis to originalDataProvider.toArray().reverse() on
every update of originalDataProvider. A ListCollectionView to wrap
originalDataProvider would have been cleaner, but there doesn't seem to be a
simple way to say sort the opposite of how this is sorted by default. I tried
to extend ListCollectionView into a ReverseListCollectionView by overriding
getItemAt() and itemIndex(), but it looks like CategoryAxis actually uses
IViewCursor, and I would have had to write my own. I think this solution works
reasonably well for now.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Maciek Sakrejda
Sent: Sun 1/11/2009 3:39 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: CategoryAxis category order
Hmm. No dice. Overriding describeData() to return
super.describeData().reverse() does nothing... Maybe I'll go the
ListCollectionView route.
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Maciek Sakrejda
Sent: Sun 1/11/2009 2:47 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Re: CategoryAxis category order
Thanks, Amy. The nature of how we use charts would make a solution based around
modifying the axis a lot simpler, but I may need to fall back to this approach.
I think the problem is that an axis is unaware of its orientation, and
left-to-right is isomorphic with bottom-to-top (to represent a cartesian chart
with the standard x and y dimensions). This makes sense for numeric and
datetime axes, but it seems counter-intuitive for a category axis. I wonder if
I can monkey around with AxisBase.describeData()...
-Original Message-
From: flexcoders@yahoogroups.com on behalf of Amy
Sent: Sun 1/11/2009 5:52 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: CategoryAxis category order
--- In flexcoders@yahoogroups.com, Maciek Sakrejda msakre...@...
wrote:
When I have a data provider like
[ { category : foo, val : 1 }, { category : bar, val : 2 },{
category :
baz, val : 3 } ]
and graph this on a BarChart as category vs. val, the values are
graphed
bottom to top. That is, category foo is on the bottom, then bar, then
baz at the top. Is there a way to reverse this order, and have the
categories as foo, bar, baz bottom-to-top without having to re-sort
the
dataprovider (it is used elsewhere) or copy the data in reverse order
(I'd rather extend the charting components to do the right thing)?
How bout just creating a ListCollectionView that points to the same
data and sort that?
winmail.dat
