QGIS

Install QGIS 3.4 in Ubuntu 16.04

Install QGIS 3.4 in Ubuntu 16.04

The month of October, 2018, ushered in the new LTR, QGIS 3.4 “Madeira”. This was a long-awaited version as it unleashes powerful tools for use by GIS enthusiasts in the industry. Switching to QGIS 3.4  is very easy for users who’ve been on the previous 3.x versions. For users moving from 2.x, it might look…

Adding triggers to SpatiaLite Databases in QGIS

Adding triggers to SpatiaLite Databases in QGIS

There exist various data management methods in QGIS. A data source can be a file, a directory, a protocol or a database. SpatiaLite is database that is widely used in QGIS. You can store layers into this database and edit these layers directly in your QGIS project. During digitization, there are many actions that get…

Using Photos in QGIS Projects

Using Photos in QGIS Projects

In QGIS, there are many formats of data-sets that can be used. Joins and relates help users get the best out of their data depending on the users’ needs. These tools exist out of-the-box for use by everyone. However, there are some tools or functionalities that are tricky to use as they don’t appear straightforward…

SpatiaLite Databases for Community Mapping

SpatiaLite Databases for Community Mapping

All Geospatial projects contain an element of data collection and preparation. This is vital stage in project execution that has to be dealt with carefully and correctly as it would lead to loss of time and resources. Participatory mapping involves set of techniques and approaches that combine the tools of modern cartography with participatory methods…

How GIS influenced my life

How GIS influenced my life

It was in 2010, when I received my KCSE results for the 2009 exam. Having passed the exam, I was to join campus a year later. Born and raised in the country-side, the dream of visiting and living in Nairobi was so real but seemed huge.  I would think about being in Nairobi each day…

Filtering data from PostGIS database in QGIS

Filtering data from PostGIS database in QGIS

Hello, Today, I wanted to share a very short article with you regarding spatial data queries in QGIS from a PostGIS database. This is an approach widely used by developers, analysts and other professionals in the GIS sector in trying to achieve their objectives.Loading spatial data from a remote server or node, at times, requires…

The good news in QGIS 2.14.0 – Essen

The good news in QGIS 2.14.0 – Essen

In the last few years, QGIS has really grown in a huge collection of tools, algorithms tackling various tasks in its environments.The Dev team has really given QGIS a new look and feel and also power to roar in the GIS world. Tools tackling simple to complex processes have now been developed and been released…

The amazing sections in QGIS

The amazing sections in QGIS

Recently, I posted a photo here about the styling effects found in QGIS for vector layers.This quite caught many eyes into the issue of the awesomeness found in QGIS and today, I want to explore some of this awesomeness.First, I will start with the issue mentioned above; Draw effects in style section Often, we do…

3D visualization of Data in QGIS

3D visualization of Data in QGIS

Well, this is a topic that I have always wanted to write about but have been a little bit reluctant.I think this has been attributed to the fact that I didn’t find people who wanted to use this feature.Last week, I found someone who really wanted this in their project.Here is the thing, if you…

Using QGIS Layer Styles in GeoServer

Using QGIS Layer Styles in GeoServer

GeoServer provides us with the functionality of styling our layers to match our preferences. However, many are the times that many GeoServer users face problems while publishing their layers. Styling in GeoServer should be an easy task when doing web applications or publishing your GIS layers via GeoServer. Today, I will focus on how to…

Generating Contours from  DEM in QGIS

Generating Contours from DEM in QGIS

      A few weeks ago I wrote a post on “Generating DEMs from Contours” which was quite a straight forward process as explained.In this post , I will show how to “reverse engineer” the process and generate contours from DEMs. This time round am also going to demonstrate how to clip our dataset to work…

Maps for the Color blind

Maps for the Color blind

We are living in an era of digital maps.We’ve evolved from static maps to dynamic maps where different formats(icons,pictures) of information are being developed and shared by a large group of people globally.When mapping,less often do we consider the color blind.How do you paint a picture or develop a map when the color blind is…

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