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A Journey in Building a Standalone GIS in Python
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A Journey in Building a Standalone GIS in Python
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Introducing a Pure-Python Quadtree Spatial Index for GIS-use | The Python-GIS Challenge
https://thepythongischallenge.wordpress.com/2014/05/23/introducing-a-pure-python-quadtree-spatial-index-for-gis-use
A Journey in Building a Standalone GIS in Python. Introducing a Pure-Python Quadtree Spatial Index for GIS-use. May 23, 2014. I just finished writing a quadtree spatial index package in pure python which is aimed for GIS use. Spatial index packages for Python already exist. A popular one being the Rtree package, which comes in both a C and pure-Python variety. In comparison to Rtree indexes however, QuadTree indexes are supposedly preferable over Rtree indexes when the index has to be updated often.
Pyncf – NetCDF files in pure Python | The Python-GIS Challenge
https://thepythongischallenge.wordpress.com/2016/03/26/pynetcdf-netcdf-files-in-pure-python
A Journey in Building a Standalone GIS in Python. Pyncf – NetCDF files in pure Python. March 26, 2016. Ever wanted to handle NetCDF in pure Python? My problem was that existing NetCDF libraries for python all rely on interfacing with underlying C based implementations and can be hard to setup outside the context of a full GDAL or SciPy stack. In addition to possible API changes I am contemplating changing the name, some of the obvious names were already taken, though I think I will likely stick to Pyncf&...
Pytess: A Convenient GIS Tesselator package | The Python-GIS Challenge
https://thepythongischallenge.wordpress.com/2015/06/25/pytess-a-convenient-gis-tesselator-package
A Journey in Building a Standalone GIS in Python. Pytess: A Convenient GIS Tesselator package. June 25, 2015. So with a few touch ups I built on their script and released a new Pytess. Tesselator package on PyPi! Or check it out on GitHub. Python GIS Challenge, the Book. PyCRS – A package for reading and formatting CRS definitions →. Pingback: Pytess Python GIS Resources. June 22, 2016 at 10:28 am. If not do you have any advice about other software where I can implement? Thanks a lot,. You are commenting...
Shapy – A new pure-Python Shapely in the works | The Python-GIS Challenge
https://thepythongischallenge.wordpress.com/2014/06/04/shapy-a-new-pure-python-shapely-in-the-works
A Journey in Building a Standalone GIS in Python. Shapy – A new pure-Python Shapely in the works. June 4, 2014. Over the matter of the last few days, I was working on understanding the pure-Python version of Angus Johnson’s polygon Clipper library. That would be me to the right about now). As I got it working and wanted an easy way to test it I began adding more and more functionality, and before I knew it turned out to be quite solid and useful. The package I ended up writing consi. Shapefile reader to ...
Python GIS Challenge, the Book | The Python-GIS Challenge
https://thepythongischallenge.wordpress.com/2015/04/15/python-gis-challenge-the-book
A Journey in Building a Standalone GIS in Python. Python GIS Challenge, the Book. April 15, 2015. The Python GIS Challenge is going to be culminating in a book. I am writing for Packt Publishing. Short and concise, the book contains descriptions of how to implement a wide range of essential GIS features in Python, including embedding all of it in an interactive GUI application. All in the spirit of as lightweight. And as few dependencies. As possible, and tailored especially for beginners. On Pytess: A C...
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GeospatialPython.com: Generating Shapefile shx Files
http://geospatialpython.com/2011/11/generating-shapefile-shx-files.html
Points, Polylines, Polygons, Pixels, Python! Wednesday, November 2, 2011. Generating Shapefile shx Files. Shapefile shx files help software locate records. Quickly but they are not strictly necessary. The. Shapefile software can manually browse the. Records to answer a query. Lately I've been following traffic and responding to posts on the excellent site GIS StackExchange. There are several questions about shapefile shx files which also point to even more questions in the ESRI forums on this topic.
GeospatialPython.com: June 2014
http://geospatialpython.com/2014_06_01_archive.html
Points, Polylines, Polygons, Pixels, Python! Friday, June 27, 2014. Merging Shapefiles with PyShp and Dbfpy. On GIS StackExchange prompted me to write a quick script as an update to my previous merging shapefiles with pyshp. The SE question was the result of a typo but I thought this script was still useful based on other questions I've received regarding dbf files and pyshp. Version of the spec. Since the dbf format was already established, I grabbed the easiest code sample. Module is far more robust th...
GeospatialPython.com: Introducing the Python Shapefile Library
http://geospatialpython.com/2010/11/introducing-python-shapefile-library.html
Points, Polylines, Polygons, Pixels, Python! Sunday, November 28, 2010. Introducing the Python Shapefile Library. Over Thanksgiving I finally got around to releasing the Python Shapefile Library. It is a single file of pure Python with no dependencies. It reads and writes shp, shx, and dbf for all 15 types of shapefiles in a pythonic way. You can find it with documentation here. Or search for "pyshp" on Google Code. Here's a basic example of writing a polygon shapefile:. Beyond the docstring tests and so...
GeospatialPython.com: Geolocating Photos in QGIS
http://geospatialpython.com/2015/05/geolocating-photos-in-qgis.html
Points, Polylines, Polygons, Pixels, Python! Thursday, May 7, 2015. Geolocating Photos in QGIS. Photos taken with GPS-enabled cameras, including smartphones, store location information in. You need to make sure you have QGIS. Installed as well as the Python Imaging Library. PIL) for the Python distribution that QGIS uses. QGIS should already have PIL included. You can download some sample geotagged images here. How to do it. Import glob import Image from ExifTags import TAGS. Now, we'll create a function...
GeospatialPython.com: Clip a Raster using a Shapefile
http://geospatialpython.com/2011/02/clip-raster-using-shapefile.html
Points, Polylines, Polygons, Pixels, Python! Tuesday, February 22, 2011. Clip a Raster using a Shapefile. Clipping a satellite image: Rasterize, Mask, Clip, Save. Convert the vector shapefile to a matrix which can be used as mask. Load the geospatial image into a matrix. Throw out any image cells outside of the shapefile extent. Set all values outside the shapefile boundary to NODATA (null) values. OPTIONAL: Perform a histogram stretch on the image for better visualization. Out of reading and writing the...
GeospatialPython.com: Mapnik - Maybe the best Python Mapping Platform Yet
http://geospatialpython.com/2009/02/mapnik-maybe-best-python-mapping.html
Points, Polylines, Polygons, Pixels, Python! Thursday, February 12, 2009. Mapnik - Maybe the best Python Mapping Platform Yet. The vast majority of geospatial libraries are written in either C or C for two reasons: 1) Speed and 2) Many of these libraries have began development when C/C were the languages du jour. Python and these are downright fun! One of the most notable examples is Mapnik. Another interesting feature of Mapnik is its straightforward xml dialiect for sty. And zoom into London to see it ...
GeospatialPython.com: November 2013
http://geospatialpython.com/2013_11_01_archive.html
Points, Polylines, Polygons, Pixels, Python! Tuesday, November 26, 2013. Extracting Features from Images. Learning Geospatial Analysis with Python". With permission from Packt Publishing. This post is a follow-on to the previous post ". Image Classification with Numpy and GDAL". For this example we'll take a subset of our Landsat 8 thermal image to isolate a group of barrier islands as seen in the following screenshot:. You can download this image here:. The islands are clearly isolated so our extraction...
GeospatialPython.com: Clipping a Shapefile in Pure Python
http://geospatialpython.com/2015/05/clipping-shapefile-in-pure-python.html
Points, Polylines, Polygons, Pixels, Python! Wednesday, May 13, 2015. Clipping a Shapefile in Pure Python. In a previous post, I showed how to use pure Python to subset a shapefile by attributes. That method is fast if the attributes define the data you want to clip. But sometimes you need to clip data spatially. Here's our goal for this example. We have a shapefile with the major roads of the United States which you can download a sample dataset here. Each road in the shapefile has its own shape record ...
GeospatialPython.com: March 2014
http://geospatialpython.com/2014_03_01_archive.html
Points, Polylines, Polygons, Pixels, Python! Wednesday, March 26, 2014. BOGO Offer to Celebrate 2000th Book Title from Packt. Packt Publishing is celebrating their 2000th book title, "Learning Dart" of all things, with a buy-one-. Get-one offer on all 2000 books. You can access the limited-time offer on Packt's site here: bit.ly/1j26nPN. The following list of Amazon links covers all of the geospatial books in Packt's library which is the largest collection by any one publisher as far as I know. Introduci...
GeospatialPython.com: Archive
http://geospatialpython.com/p/archive.html
Points, Polylines, Polygons, Pixels, Python! July 29, 2013 at 4:55 PM. Thank you so much for your wonderful shapefile creator I was trying to use Arc prior to that which works fine until I had a memory issue. that being said I eventually ran into it with yours as well :(. Are you able to specify how many records will append to the self. shapes.append(polyShape). Is it just the array size of Python that is holding it back? July 29, 2013 at 8:30 PM. Thanks for the kind words! Subscribe to: Posts (Atom).
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The Python Addict's Monty Python Site!
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THE ORIGIN OF PYTHONGA. This is a story of a not so ordinary stripper who finds herself spiraling out of her world and into an unimaginable reality. A reality filled with ghosts, angels, demons, villains, and of course, a stripper turned superhero.
The Python Game Book [The Python Game Book]
The Python Game Book. Learn Python. Code your own games. The Python Game Book. You are here: start. Translations of this page:. The Python Game Book. The Python Game Book is a free creative-commons licensed. Book written by Horst JENS. Mostly) and friends. If you want to create and edit pages in this wiki, please write me an email. So that i can create an account for you. Automatic account creation is currently deactivated because of spammers. And other free Open Source. This wiki is organized into major...
thepythongischallenge.wordpress.com
The Python-GIS Challenge | A Journey in Building a Standalone GIS in Python
A Journey in Building a Standalone GIS in Python. Pyncf – NetCDF files in pure Python. March 26, 2016. Ever wanted to handle NetCDF in pure Python? My problem was that existing NetCDF libraries for python all rely on interfacing with underlying C based implementations and can be hard to setup outside the context of a full GDAL or SciPy stack. In addition to possible API changes I am contemplating changing the name, some of the obvious names were already taken, though I think I will likely stick to Pyncf&...
Learn Python | Python tutorials for beginners | The Python Guru
Become a better python developer. The Python Guru PDF download. Python tutorials for beginners. Start from here if you are beginner. In this section you will learn everything you need to know about python, each lesson expands on the previous one, so i recommend to start sequentially. Getting started with python. Python Generating Random numbers. Python Object and Classes. Python inheritance and polymorphism. After mastering basics of python move on to some advances topics. Python *args and * kwargs.
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