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awarded  Tumbleweed
Apr
17
asked Problems rendering tilestache served mbtiles in QGIS
Apr
3
asked Creating Legends for QGIS 2.0 Feature Blend Mode Outputs
Dec
20
answered pgrouting 2.0 package for postgresql 9.3
Apr
13
comment R packages for deriving spatial clusters from origin-destination matrix
Hi Andy, sorry, I didn't mean to imply that good looking visualizations weren't useful. As I understand the Intermax approach, it is a way of defining regions based on flows / connectivity between a large number of nodes. As such, it produces clusters of functionally connected nodes. In any case, I'll post back with my solution. Thanks for your feedback.
Apr
12
accepted R packages for deriving spatial clusters from origin-destination matrix
Apr
12
awarded  Supporter
Apr
12
comment R packages for deriving spatial clusters from origin-destination matrix
Thanks for these links. I was interested in the second approach, which I believe is an implementation of the Intermax approach. I believe that Bostock (D3) was involved in the creation of Protovis, which had flow map creation. However, I'm less interested in a pretty visualization and more interested in being able to derive lists of node regions. The context is deploying resources to manage and balance assets within each region, if that helps.
Apr
11
asked R packages for deriving spatial clusters from origin-destination matrix
Feb
18
comment How to implement multivariate hex bins?
Fantastic. Worked like a charm.
Feb
18
accepted How to implement multivariate hex bins?
Feb
18
awarded  Commentator
Feb
18
comment How to implement multivariate hex bins?
@underdark I used hex polygons that I generated using Michael Minn's plugin and then generated points at the centroid of the polygons. Those are the points that I'm trying to style. But I have access to both polygons and points which have the necessary attributes.
Feb
18
comment How to implement multivariate hex bins?
Aaron, I haven't tried this in R yet. I took a look at hexbin and didn't see any easy way to implement a bivariate mapping. But the other reason why I didn't go the R route is that ultimately I'm designing maps with this data and it seemed easier to stick to QGIS/ArcGIS.
Feb
18
comment How to implement multivariate hex bins?
Jake, thanks for this solution. I'll give it a shot a bit later and report back. As for applying a color ramp to SVGs, it's tricky and had to be done manually. What I did was modify the svg file. Within the polygon tag, I inserted the following: fill="param(fill) #ff0000" stroke="param(outline) #00ff00" stroke-width="param(stroke-width) 10" Then, I used ColorBrewer to generate a color scheme which I applied to the classified data manually. Not the easiest approach and I think your proposal will work better. Thanks.
Feb
18
asked How to implement multivariate hex bins?
Feb
18
awarded  Scholar
Feb
18
accepted Points in Polygon Count: Error with arcpy.selectLayerByLocation_management
Feb
18
comment Points in Polygon Count: Error with arcpy.selectLayerByLocation_management
This approach yielded the same error. But I'll implement the function-based approach that you linked to. Thanks.
Feb
17
comment Points in Polygon Count: Error with arcpy.selectLayerByLocation_management
Sorry, I changed some of the names from the original code. The errors aren't related to this. Thanks for pointing this out.