123 reputation
19
bio website framingbywalter.com
location Philadelphia
age
visits member for 1 year, 10 months
seen May 3 '13 at 0:37

A Philadelphia artist with degrees in material engineering and a smattering of coding experience in: Fortran, Basic, C, Php, html, Actionscript.

Currently obsessed with photography and the broader modes of visual perception; thus GIS visualization is perhaps becoming a new obsession.


Dec
2
awarded  Popular Question
Sep
24
awarded  Autobiographer
Jul
2
awarded  Curious
Mar
18
awarded  Enthusiast
Mar
5
comment How to customize label color in QGIS: Data defined label settings? Expressions? Both? What are the steps?
Sorry I wasn't clear. I'm new to this too. QGIS has two separate methods of styling labels. If you select the ABC button in the toolbar, it has a much more advanced system (and I believe the only one which will be supported in newer versions). This is the xpression based labeling system I'm speaking of. More tips on it's use below. gis.stackexchange.com/questions/22896/… gis.stackexchange.com/questions/41478/…
Mar
5
comment How to customize label color in QGIS: Data defined label settings? Expressions? Both? What are the steps?
One place to start:nathanw.net/2011/10/27/expression-based-labeling. I'm also looking for a more comprehensive index expressions. I selected my labels by using a field in my attributes table. You may be able to link your polygons color attribute to your labels color attribute through a logical expression.
Mar
5
asked Where can I get a comprehensive list of Rules expression operators?
Mar
2
comment Why do my Shapefiles not align correctly?
And Thank you all.
Mar
2
comment Why do my Shapefiles not align correctly?
That did the Trick! : 1. started fresh 2. didn't set CRS, but did set On-The-Fly reprojection. 3. imported the census (EPSG:2272) map and set the project CRS to this layer. 4. Imported the Police call data from the .CVS file and set that layer to WGS84. Bingo, right on top of each other. The only question I have is, should I post this as a comment or an answer?
Mar
2
accepted Why do my Shapefiles not align correctly?
Mar
1
comment Why do my Shapefiles not align correctly?
Are you saying, Jay, that a polar CRS is the native underlying mathematical system and that any Cartesian system is always a projected transformation back to the polar sytem?
Mar
1
comment Why do my Shapefiles not align correctly?
Thanks for the tips Jay, I'll keep grinding. You've given me another clue and a question. There must be some sort of reconciliation between Polar and Cartesian systems. When you say a Lat/Long system is technically 'not projected', how is a degree based system handled relative to a X/Y system? Should I post this as a new question?
Mar
1
comment Why do my Shapefiles not align correctly?
Thank you for your help Andre. The other data comes from: <origin>U.S. Department of Commerce, U.S. Census Bureau, Geography Division</origin> <pubdate>2010</pubdate> <title>GIS_PLANNING.Census_Block_Groups_2010</title> <edition>2010</edition> <geoform>vector digital data</geoform> <onlink>census.gov/geo/www/tiger</onlink>; I'll work on this and let you know how it goes.
Mar
1
asked Why do my Shapefiles not align correctly?
Feb
26
awarded  Teacher
Feb
26
accepted What are the highest and lowest precision Coordinate Reference Systems for US East Coast?
Feb
26
accepted What is No Data Value?
Feb
26
accepted What defines a Class in the Heat map plugin?
Feb
26
awarded  Scholar
Feb
26
accepted What are Bands, Dimensions, and Histograms in QGIS?