Welcome to JoshConsult.


16 Apr

Line of Sight vs Viewshed Analysis

The line of sight analysis uses a polyline as input. From an observer’s point of view, it determines where they have a clear view. The tool cuts the line up into obstructed and non-obstructed sections.

Because line of sight determines what is visible and hidden along a line, the input is a polyline. Also, it’s important how you draw the line. For example, the order you draw vertices determines the start and end point of the visibility analysis.

13 Mar
GIS jobs


While term ‘Geospatial’ is becoming more and more trendy, many do still not know what hides behind the term. List of reasons for learning some GIS as soon as possible could probably make a whole dedicated post. This time though, we won’t be convincing you that Geospatial technology is amazing, but will give a list of opportunities for learning.

14 Feb


GIS networks consist of interconnected lines (known as edges) and intersections (known as junctions) that represent routes upon which people, goods, etc. can travel.

I will be showing you how to do this using 2 methods.

The first one will be done using a road network shapefile and the second one will the done using a feature dataset that contains a road network.

06 Feb

Introduction to Network Analysis

GIS networks consist of interconnected lines (known as edges) and intersections (known as junctions) that represent routes upon which people, goods, etc. can travel.

The object traversing the network follows the edges, and junctions appear when at least two edges intersect.

Junctions and edges can have certain attributes affixed to them that increase the cost of traveling in the network, known as impedance. For example, a road network can have speed limits attached to the edges, and a junction can prevent left turns.

05 Jan
history of gis

History of GIS

Mapping has revolutionized how we think about location. Maps are important decision-making tools. They help us get to places. And they are becoming more immersed in our everyday lives.

26 Nov

Remote Sensing – Image Classification Techniques

Image classification is the process of assigning land cover classes to pixels. Unsupervised and supervised image classification techniques are the two most common approaches. However, object-based classification has been used more lately because it’s useful for high-resolution data. What are some of the differences between supervised and unsupervised classification? Find out more by reading.

10 Oct


In the GIS world, a 3 Dimensional object has an X, Y and Z coordinates. Z coordinate is used to draw height. 3 Dimensional map gives a better understanding of the object, in GIS 3 Dimensional map might be  TIN image, Digital Elevation Model or any GIS layer with elevation values. To plot these GIS layer with Z value or TIN image or DEM data you need a special kind of GIS software. So here are few 3 Dimensional free GIS software that will help you create and visualize your 3 Dimensional data.

22 Sep
Artificial Intelligence

Geospatial Artificial Intelligence

Artificial Intelligence (AI) has become a buzzword that symbolizes the next stage of innovative technological transformations and how the industry in the future would be driven. Using intelligent algorithms, data classification and smart predictive analysis, AI has its utility in a large number of sectors.
A more specific subset of AI that combines the exactitude of GIS with the razor-sharp analysis and solution-based approach of AI is termed Geospatial AI, or simply Geo.AI.

15 Sep

Fighting electricity theft in Nigeria with GIS

The main consequence of electricity theft is widespread power outages. Also, electric utility companies across Nigeria struggle with illegal connections to the power grid that generate huge losses and are a hazard for locals. GIS Cloud a software development company from Croatia is joining the fight to help mitigate this problem.
The Enugu Electricity Distribution Company utilized their GIS solution to map the entire distribution network and enumerate customers, an important step in tackling the rampant electricity theft in Nigeria.