How to speed up working with QGIS or is it slow?

How to speed up working with QGIS or is it slow?

If whatever you use has the same speed/performance issues then the problem is database side. You may also want to try exporting the data to a SpatiaLite database and loading from that. Also, if you want to stick to QGIS, try uninstalling it and using a different version.

How long does it take to load QGIS on Windows 10?

Sign in to your account I recently reinstalled Windows 10 v. 1909 on my laptop, and installed QGIS 3.10.1 immediately after. However, the program would take a few minutes to load up, and any action I wanted to do would take anywhere from 30 sec to ~5 min to accomplish.

Why does QGIS get blocked in the UI thread?

Clearly QGIS is doing file operations in the UI thread, or at least it’s getting blocked by them, which is.. not ideal. I don’t know enough C++ to try to fix it, but let me know if I can help in some other way. The workaround from #33164 might help: “hide from Browser” for certain mount points (“drive letter” in Windows).

Why does QGIS freeze when disabling a VPN?

Within QGIS, no project or file is related to this VPN network drive. When disabling VPN while in QGIS, the programm will freeze at the next action (simple menu button click) until Networkdrive is re-enabled again. @sdieters this might be interesting for you as similar/same problem discussed in #38346

What’s the problem with QGIS on Windows 10?

Fresh install of QGIS on Windows 10, the issue occurs immediately. I don’t have the a build set up on my machine for debug output, but I can take a stab at it if it’s critical to getting more information. Laptop is a Lenovo Yoga c930 with 16GB RAM and an Intel i7-8550U CPU @1.80 GHz.

When did I start using QGIS for GIS?

(Im using GIS since 1995.. from arcview 3.0 to arcgis 10.2, and from 2003 using Qgis..under windows and now under ubuntu (at work) ) Thanks for contributing an answer to Geographic Information Systems Stack Exchange!

How big is the disk space for PostgreSQL?

The PostgreSQL table containing those rows occupies less than 130 kb of disk space, and the queried rows comprise pretty much the entire table. System: MacBook OS X 10.7.3, 2.4GHz Intel Core Duo, 4GB RAM. Performance: Rendering takes 5-10 minutes.

How big are the shapefiles in QGIS?

This is frustrating because any modification of the project, however slight, requires a lengthy wait before the results can be assessed, and sometimes the application simply crashes without completing whatever I asked. Is this unusual? I have Shapefiles of the same data. They are 45 files totaling about 100 MB.

What happens if somebody edits the same feature in QGIS?

This version of QGIS does not track if somebody else is editing the same feature at the same time as you are. The last person to save its edits wins. For an optimal and accurate edit of the vector layer geometries, we need to set an appropriate value of snapping tolerance and search radius for features vertices.

What is snapping tolerance and search radius in QGIS?

For an optimal and accurate edit of the vector layer geometries, we need to set an appropriate value of snapping tolerance and search radius for features vertices. Snapping tolerance is the distance QGIS uses to search for the closest vertex and/or segment you are trying to connect to when you set a new vertex or move an existing vertex.

What happens if you dont snap vertices in QGIS?

If you aren’t within the snapping tolerance, QGIS will leave the vertex where you release the mouse button, instead of snapping it to an existing vertex and/or segment. The snapping tolerance setting affects all tools that work with tolerance.

Do you need QGIS to digitize raster data?

Digitizing is one of the most common tasks that a GIS Specialist has to do. Often a large amount of GIS time is spent in digitizing raster data to create vector layers that you use in your analysis. QGIS has powerful on-screen digitizing and editing capabilities that we will explore in this tutorial.

How to make a map using QGIS on the fly?

Using ‘on-the-fly’ CRS transformation to visualize your data in a different projection. We will use the Natural Earth dataset – specifically the Natural Earth Quick Start Kit that comes with beautifully styled global layers that can be loaded directly to QGIS. Download the Natural Earth Quickstart Kit.

What do you need to know about the QGIS browser?

QGIS Browser is one of the main panels of QGIS that lets you quickly and easily add your data to projects. It helps you navigate in your filesystem and manage geodata, regardless the type of layer (raster, vector, table), or the datasource format (plain or compressed files, database, web services).

How do I open a file in QGIS?

You can also add a layer or open a QGIS project directly from the Browser panel by double-clicking its name or by drag-and-drop into the map canvas. Once a file is loaded, you can zoom around it using the map navigation tools.

How to add a layer to a QGIS project?

To add a layer into a project: right-click on QGIS toolbar and check Browser Panelto activate it or select it from the menu View ‣ Panels(or Settings ‣ Panels); a browser tree with your filesystem, databases and web services is displayed; find the layer in the list;

How to create a new SpatiaLite layer in QGIS?

Find the button to create a new layer and use the dropdown to create a new new Spatialite layer, or select Layer –> New –> New Spatialite Layer. Select the database we created in the previous steps in the drop down. Give the layer the name places. Tick the checkbox next to Create an auto-incrementing primary key.

How to calculate the shortest path in QGIS?

Open the attribute table of the output layer. It contains three fields, representing the coordinates of the start and end points and the cost. We chose Shortest as Path type to calculate, so the cost represent the distance, in layer units, between the two locations. In our case, the shortest distance between the chosen points is around 1000 meters:

How to create a line layer in QGIS?

A new line layer is created representing the shortest path between the chosen points. Uncheck the network_lines layer to see the result better: Open the attribute table of the output layer. It contains three fields, representing the coordinates of the start and end points and the cost.

Which is faster a sequential scan or index in PostGIS?

Now issue a query where you use the geometry operator && to search for a bounding box that matches only very few of those rows. Now the query optimizer sees that the table has only 3 pages and 80 rows. It estimates that a sequential scan on such a small table is much faster than using an index.

What are toast tables used for in PostGIS?

TOAST tables are a kind of “extension room” used to store large (in the sense of data size) values that do not fit into normal data pages (like long texts, images or complex geometries with lots of vertices), see the PostgreSQL Documentation for TOASTfor more information).