Hi Andrea,

I've played around a bit more with the legend, in particular the ramp option. See attached image - does that better meet your requirements?

Keep in mind I have not done anything with the NO_DATA values yet.

Emily

On 9/21/2012 5:25 AM, andrea antonello wrote:
Hi Emily, very nice work, always good to see you active!

Comments:

1) ramps
I am not able to review right now, but I would love to see the legend
ramp enhanced, since that one is not really helpful.

The ramp should be vertical and pass through at least a couple of
colors, which means it also should take up the space of about 5 boxes
usually taken up by the vectore box.

I have done that kind of work for the JGrass raster legend and would
be happy to retire that one to have it all inside the legend.
Do you think we could somehow converge on that?

Also, what defines when to use a category or a ramp?

2) In the above screen I see that some values seem to be integers,
whereas others doubles. Why is that happening?

3) I would suggest to consider novalues. I don't think that someone
wants to have the -9999.0 in the legend? Maybe that could even be put
inside a preference panel to set?

4) I would suggest to put borders around the boxes in order to enhance
readability. In the case a color is the same as the background, it
looks odd (ex the -9999.0, but also white of the ramp on white
background)

Cheers,
Andrea



On Thu, Sep 20, 2012 at 10:01 PM, Emily Gouge <[email protected]> wrote:
For the project I'm working on I needed to add the ability to include themed
rasters in the legend.  In the process of adding this functionality I've
made a number of improvements to the udig legend.

Updates include:
1) Fixed the legend style configurator so it remembers the style parameters
entered by the user.  Previously, it was always displaying the default
values.

2) I added some layer interceptors to track when legend layers are
added/removed and add listeners.  I did this so I would watch context
changes and updated the legend when another layer changed.  I updated the
legend if the style changed, visibility changed, or the context model
changes.  This means the user does not have to refresh the map to update the
legend if they change a layer.

3) Fixed some rendering issues with the height of the legend being bigger
than required.

4) I added code to display ColorMap values for GridCoverage whose styles
include a ColorMap (see attached image for example).  If the style does not
include a ColorMap then the default icon is used.    I supported the three
types of ColorMap: intervals, values and ramp.

I've made a pull request:
https://github.com/uDig/udig-platform/pull/149

Feedback/comments are welcome.

Emily

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<<attachment: ramp_legend.png>>

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