• Skip to primary navigation
  • Skip to main content

North River Geographic Systems Inc

Spatial Problem Solving

  • Home
  • About NRGS
  • Blog
  • Resources
    • Guides for using TN Data with QGIS
    • QGIS Resources
    • Tutorials
  • Services
    • Support
    • NRGS Geo Suite
    • Tennessee NG911 Server
    • Data Analysis
    • Training
  • Portfolio
  • Show Search
Hide Search

selection layers

Upcoming in QGIS 2.8: Temporary Scratch Layers

rjhale · Feb 16, 2015 ·

I know many don’t get the opportunity to just immerse yourself in QGIS. Luckily work is flexible enough so I can. I do a lot in QGIS to see how it works or doesn’t work.

One of the things I was struggling with was “selection layers” in the arcgis world. It is how it sounds – you select a feature (or features) and make a new layer. It helps in analysis and helps in cartography. I can quickly pull a feature out and display it.

In QGIS 2.6 I discovered that I could select a layer and copy it to memory – which more or less duplicated “selection layers”. In ArcGIS the layer persists upon saving and reopening an MXD (most of the time). In QGIS the minute you exit it’s gone. It’s truly in memory.

memorylayer

In the upcoming 2.8 you have the copy to memory functionality and you also have a new bit of functionality – create a scratch layer in memory. Scratch layers look like a spatialite layer when they are built. You go to Layer > Create new Layer > Temporary Scratch Layer.

scratchlayer

You work. Build. Create. Destroy. All in memory. When you close qgis it’s gone – although you have the ability to save it all out to a file of your choosing. Useful? I think so. Of course I am still a fan of creating a temp directory in a project and throwing things in it to be deleted later. Overall – a very good addition to the 2.8 release.

Intro to QGIS Class is now online!

 

 

Contact

  • (423) 653-3611
  • info@northrivergeographic.com

Copyright © 2019 · Monochrome Pro on Genesis Framework · WordPress · Log in

  • Home
  • About NRGS
  • Blog
  • Resources
  • Services
  • Portfolio