Hi - perhaps you do not have enough geospatial data in your index to
generate a larger image? Try setting the facet.heatpmap.gridLevel to
something higher like 4.
I've run queries like:
q=insert whatever
here&wt=json&indent=true&facet=true&facet.heatmap=geo&facet.heatmap.gridLevel=4&facet.heatmap.format=ints2D&rows=0&facet.heatmap.maxCells=35554432
I'm not familiar with the notation you have
facet.heatmap=store_geohash. What is that?
I'm very interested in working with heatmaps and have tried integrating
the results from Solr with GeoTools. I have access to a very sizable
index with geospatial content in it, and I've been able to generate
images like this:
http://lovehorsepower.com/images/Solr/AllDataSinceJan01_2015_Map.jpg
The above is a 1024x1024 raster.
Doing a geospatial filter query around the UK results in an image like this:
http://lovehorsepower.com/images/Solr/TwitterDataOneDayUKGeoSearchMap.jpg
I would love to be able to apply some heatmap visualization to this.
Anyone have any ideas on what tools to use?
Thank you.
-Joe
On 6/13/2015 4:29 PM, William Bell wrote:
OK. I was able to get a PNG - but it looks tiny and a blob. Not sure how to
use it.
echo iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA0UlEQVR42mNg
YGD4P8B41AEwBuNAOoD7PwMbP5BmGygHyP9nENf5z8C45D8Dk+ZAp4FNA+
wA5pn/GZfz/GeQzv3PkL3hP4Pw+f8MLGuBctl0cgCv1n+Gton/GSUs/jPGL/jP+
uvCf467IAdMoFcUyPxnaS78zzCN6T+TKMt/5g+T/jNJraZzOXBc6T/D9bv/
mfp//2f8GDqABZFCzX/GQh86OED1338Grm34FVrMoEcITKdDt
msZrYxGHTDqAFIdwDgaBaMOGHXAqANGHTC8HQAAQf8YdbR5KkIAAAAASUVORK5CYII= |
base64 --decode > test.png
Very strange.
Maybe I need to zoom in?
On Sat, Jun 13, 2015 at 2:18 PM, William Bell <billnb...@gmail.com> wrote:
How do you use the heatmaps feature to show the PNG or use the int2D to
show the heatmap easily just for testing?
http://localhost:8983/solr/select?q=*%3A*&wt=json&rows=0&indent=true&facet=true&facet.heatmap=store_geohash&facet.heatmap.format=png
{
- responseHeader:
{
- status: 0,
- QTime: 163,
- params:
{
- facet.heatmap.format: "png",
- q: "*:*",
- facet.heatmap: "store_geohash",
- indent: "true",
- rows: "0",
- wt: "json",
- facet: "true"
}
},
- response:
{
- numFound: 2664396,
- start: 0,
- docs: [ ]
},
- facet_counts:
{
- facet_queries: { },
- facet_fields: { },
- facet_dates: { },
- facet_ranges: { },
- facet_intervals: { },
- facet_heatmaps:
{
- store_geohash:
[
- "gridLevel",
- 2,
- "columns",
- 32,
- "rows",
- 32,
- "minX",
- -180,
- "maxX",
- 180,
- "minY",
- -90,
- "maxY",
- 90,
- "counts_png",
-
"iVBORw0KGgoAAAANSUhEUgAAACAAAAAgCAYAAABzenr0AAAA0UlEQVR42mNgYGD4P8B41AEwBuNAOoD7PwMbP5BmGygHyP9nENf5z8C45D8Dk+ZAp4FNA+wA5pn/GZfz/GeQzv3PkL3hP4Pw+f8MLGuBctl0cgCv1n+Gton/GSUs/jPGL/jP+uvCf467IAdMoFcUyPxnaS78zzCN6T+TKMt/5g+T/jNJraZzOXBc6T/D9bv/mfp//2f8GDqABZFCzX/GQh86OED1338Grm34FVrMoEcITKdDtmsZrYxGHTDqAFIdwDgaBaMOGHXAqANGHTC8HQAAQf8YdbR5KkIAAAAASUVORK5CYII="
]
}
}
}
--
Bill Bell
billnb...@gmail.com
cell 720-256-8076
