Turning Down the Noise with Nearblack

Posted by: Kaela Perry 3 years, 11 months ago

Image with nodata displayed over google basemap

read more / Comments

Data Driven Pages: Making Multi-paged Map Books since 10.0

Posted by: Kaela Perry in mapping GIS Cartography ESRI ArcGIS 3 years, 11 months ago

If you haven't discovered Data Driven Pages yet, boy do we have a treat for you.

read more / Comments

Canadian Open Data Summit 2014

Posted by: Will Cadell in news Open Data Data 4 years ago

I'm heading to beautiful Vancouver this evening to attend the Canadian Open data Summit Tomorrow! I'm very excited to be able to give a lighting talk about open data and how we can make it even better!

read more / Comments

Encoding GeoJSON Geometry

Posted by: Dustin Sampson in technology mapping web development code open source tools Fiona PyPROJ leaflet 4 years ago

GeoJSON is a great format, easy to read/view/use but one thing that really stands out is the verbosity of numbers and its effects on file size.  Yeah in rare cases it “may” be needed but I’m pretty sure a length that is precise to, well less than a millimeter (example: stream length: 6849.41980435 meters) is never needed.  And the other pink elephant in GeoJSON is the number of sig figs used for geometry!

read more / Comments

Step Up Your Raster Handling Skills

Posted by: Kaela Perry in mapping code gdal GIS Open Source Tools google maps 4 years ago

It is not uncommon for raster data to be large and unruly. Creating tiles is one way to deal with these large datasets and speed up rendering. This post introduces a few handy tools for dealing with raster data while walking through the process of combining multiple raster files to create tiles for a super-overlay for a nice clean visual output that renders more efficiently (particularly in Google Earth). All from the command line.

read more / Comments

Recent Posts







RSS / Atom