Javier Goizueta
|
cecba655eb
|
Preserve aggregated attributes of singleton groups
|
2015-12-29 14:56:47 +01:00 |
|
Javier Goizueta
|
b34a752172
|
Generate overviews for all Z levels
Skipping levels produces visually inferior results
|
2015-12-29 14:56:04 +01:00 |
|
Javier Goizueta
|
8ba9e74c4a
|
Order columns of aggregated overlays as in the base table
|
2015-12-29 13:38:07 +01:00 |
|
Javier Goizueta
|
6a6a5bc96a
|
Fix Sampling reduction to avoid RandomTids problems
The fixed cases will not be common but do occur in tests.
This is an interim fix which should be reverted if CDB_randomTids changes.
|
2015-12-28 19:41:14 +01:00 |
|
Javier Goizueta
|
2ff686de27
|
Clean up: remove spurious comment
|
2015-12-28 19:30:20 +01:00 |
|
Javier Goizueta
|
07326626b7
|
More efficient sampling strategy
It is also renamed properly.
|
2015-12-28 19:28:20 +01:00 |
|
Javier Goizueta
|
4afc427008
|
Rename Ref. Z strategy function
It's not that *dummy* anymore, so choose a more descriptive name
|
2015-12-28 17:47:57 +01:00 |
|
Javier Goizueta
|
a8a2c04d71
|
Remove invalid comment
|
2015-12-23 14:20:57 +01:00 |
|
Javier Goizueta
|
a5bca7d715
|
Add function for post-processing new overview tables
|
2015-12-23 14:17:50 +01:00 |
|
Javier Goizueta
|
552206464e
|
Make strategy function public
|
2015-12-23 12:50:04 +01:00 |
|
Javier Goizueta
|
2af0b9a57f
|
Add function comments
|
2015-12-23 12:42:40 +01:00 |
|
Javier Goizueta
|
1b5de84c9a
|
Add missing attribute-aggregationto the point reduction strategy
|
2015-12-23 12:17:37 +01:00 |
|
Javier Goizueta
|
5a78ee2896
|
Optimize the gridded clustering strategy
The internal grid_px parameter is adjusted for best results with default symbol size
|
2015-12-22 17:59:49 +01:00 |
|
Javier Goizueta
|
c8a1ef6f68
|
Slight optimization of gridded clustering
|
2015-12-22 15:25:21 +01:00 |
|
Rafa de la Torre
|
564ab75d2d
|
Use _cdb_estimated_extent instead of ST_Extent
With a 3.8M points table, this was a ~30% gain in my local env.
|
2015-12-21 18:41:50 +01:00 |
|
Rafa de la Torre
|
5010109c7d
|
Add _cdb_estimated_extent to get the extent from stats
|
2015-12-21 18:41:45 +01:00 |
|
Rafa de la Torre
|
e60f73a31b
|
A bit of internal documentation
|
2015-12-21 13:16:57 +01:00 |
|
Javier Goizueta
|
415a09392f
|
Gridded clustering aggregation strategy for overviews
|
2015-12-16 17:45:36 +01:00 |
|
Javier Goizueta
|
e5cc9ef0bd
|
Fix: typo
|
2015-12-16 17:26:17 +01:00 |
|
Javier Goizueta
|
f7857945c1
|
Change feature density computation algorithm
Now parameterize by the number of levels to traverse and
start with the level that covers the extent of the table
with at least N*N tiles (N=4).
|
2015-12-16 16:39:38 +01:00 |
|
Javier Goizueta
|
554464e43e
|
Use tile-recursive computation of feature density
This is a more adaptive way of estimating the feature density to
determine the base Z level.
Applying technique from http://javisantana.com/2014/10/22/traversing-quadtree.html
|
2015-12-16 12:14:37 +01:00 |
|
Javier Goizueta
|
d7c8f3d7e8
|
Fix: overlay generation was not using the proper scale
|
2015-12-15 19:13:39 +01:00 |
|
Javier Goizueta
|
4c85d7f3ad
|
Compute the reference Z level for a table
|
2015-12-15 19:12:48 +01:00 |
|
Javier Goizueta
|
d0e66910a0
|
Sketch for new Overview-creation functionality
|
2015-12-15 17:36:27 +01:00 |
|