May 29, 2017

How to generate a legend on map canvas in QGIS with PyQGIS - Tutorial

May 29, 2017/ Saul Montoya

QGIS is a powerful and user friendly GIS software. The user can represent points and style them according to the measured values. This tutorial deals with the legend representation on map canvas for a better geospatial data analysis.
Legend representation is done with just 6 lines of code on PyQGIS, the Python tool of QGIS.

PyQGIS

from qgis.gui import *
root = QgsProject.instance().layerTreeRoot()
model = QgsLayerTreeModel(root)
view = QgsLayerTreeView()
view.setModel(model)
view.show()

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Hatari Labs

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Oct 20

October 20, 2026 – December 21, 2026

Diploma in Python for Water Resources, October 2026 - January 2027

October 20, 2026 – December 21, 2026

Hatarilabs presents its educational program designed for mastering Python in real professional and academic environments. The program has an extensive practical work that goes from the basic concepts of Python, Numpy and Pandas to specific applications in water resources and geosciences coupled with geospatial analysis and machine learning.

October 20, 2026 – December 21, 2026

Recommended courses:

Course of Groundwater Modeling in Mining with MODFLOW6, Flopy and mf6Voronoi

Course of Groundwater Modelling using MODFLOW 6 and Model Muse

Course of Applied Hydrological Modeling with HEC-HMS

Course of Applied Geochemical Modeling with Phreeqc and Python

Course of Automatic MODFLOW6 Model Calibration with PEST and Model Muse

Featured

May 9, 2024

Diploma in Groundwater Modeling with Python and FloPy - Asynchronous

May 9, 2024

FloPy is the Python library that builds and executes MODFLOW models; this library has been enhanced to provide full support of MODFLOW 6 with most of its recent development is related to functionality for MODFLOW 6, tools to use vector and raster spatial data and common plotting and export functionality.

May 9, 2024

May 8, 2024

25% Off: Diploma in Applied Groundwater Modeling with MODFLOW and Model Muse - Asynchronous

May 8, 2024

We have designed a complete program on MODFLOW with Model Muse that ranges from the essential topics in flow and transport modeling to applied cases of regional modeling, infrastructure projects, and seawater intrusion. MODFLOW with Model Muse is a recent open-source software that provides various tools for simulating the groundwater flow regime in different environments.

May 8, 2024

May 8, 2024

30% Off: Program in Hydrological Modeling with SWAT+ and QGIS - Asynchronous

May 8, 2024

This program is designed to provide systematical learning from the most basic and general topics to intermediate and advanced topics, allowing the student to understand the various steps in developing hydrological models using the SWAT+ interface for QGIS. This program has a series of theoretical and practical concepts that allow the student to process spatial data, manage meteorological databases, build hydrological models, develop sensitivity analyses, and perform manual and automatic calibrations using versatile tools such as SWAT+ Toolbox, SQLite, and Python.

May 8, 2024

ONLINE COURSES:

Featured

September 15, 2022

Online Course: Applied Geochemical Modeling with Phreeqc and Python

September 15, 2022

Phreeqc is a software developed by the USGS written in C++ capable of modeling a variety of aqueous geochemical processes such as mixing of waters, modeling equilibrium between solid and aqueous phase, modeling impact of temperature, calculation of element concentration among others.

Hatarilabs has developed an applied and unique course of Phreeqc integrated with Python undes a class (object type) that can run, parse and provide Phreeqc output as Pandas dataframes and integrate it to plots and further analysis with other Python libraries on a Jupyter notebook.

September 15, 2022

February 12, 2022

Online Course: Hydraulic Modeling with HEC-RAS

February 12, 2022

HEC-RAS is a software designed to perform hydraulic 1D and 2D calculations on river channels either natural or man constructed. It allows steady flow, unsteady flow, sediment transport and water quality modelling. It is developed by the US army corps of engineers, US Department of defence and it is openly available software. The HEC-RAS steady flow is based on one dimensional energy equation, while for the unsteady flow, HEC-RAS uses an implicit, finite difference method to solve the fully dynamic Saint-Venant equations.

The objective of HEC-RAS is to solve river dynamics and river engineering problems. Applications are delimitation of flood areas, embankment and protection work design, river restoration, emergency plans for dam break, optimization of hydraulic work and risk assessment and management.

February 12, 2022

January 10, 2022

Online Course: Groundwater Modelling using MODFLOW 6 and Model Muse

January 10, 2022

This course develops the main functions and applications of the latest version of the MODFLOW 6 groundwater modeling code through the ModelMuse interface, both developed by the United States Geological Survey (USGS). This version includes innovative tools for the construction and simulation of hydrogeological models, mainly highlighting the incorporation of the discretization option for discretized by vertices grids.

January 10, 2022

August 4, 2021

Online Course: Geomachine Learning for Crop Identification with Python

August 4, 2021

The development of machine learning and geospatial libraries in Python as Scikit Image, Rasterio and Fiona gave us a new range of tools to analyze vegetation from traditional sources as satellite imagery and new sources as drone orthophotos. The appliance of Python programming for crop identification depends on many factors such as the image resolution, the vegetation stage and even the algorithm setup.

We have developed a course crop identification / delineation with geospatial and machine learning tools of Python, the course is aimed to GIS or related professionals that have basic Python knowledge. The course covers the introductory concepts of the geospatial libraries and a series of machine learning applications for crop indentification in olive trees, palms, agave and corn fields.

Note:

This course is for professionals with previous knowledge of Python. Basic concepts of Python programming will not be covered in the lessons and course material. In case you don’t have any knowledge of Python, we recommend you to take this online course.

August 4, 2021

June 29, 2021

Online Course: Hydrological Modeling with HEC-HMS

June 29, 2021

The Hydrologic Modeling System (HEC-HMS) is a free program developed by the US Corps of Engineers that implements a series of hydrological methods to represent different physical processes of the water cycle.

HEC-HMS also includes procedures necessary for continuous simulation including evapotranspiration, infiltration, hydrological routing and soil moisture accounting. The tools and options of HEC HMS make it a very versatile and powerful software for the hydrological simulation of different scenarios such as extreme events in arid regions, or water balances in wet climates.

Hatarilabs offers the online course of Hydrological Modeling with HEC-HMS for students and professionals of any country. The course is focused on theory and practical to know the different HEC-HMS tools and its application to the hydrological modeling.

June 29, 2021

March 15, 2021

Online Course: Hydrological Modeling with SWAT+ & QGIS

March 15, 2021

Hatarilabs offers the online course of Hydrological Modeling with QSWAT for students and professionals of any country. The course is focused on the acquisition and preprocessing of data for SWAT+ using QGIS 3.4 for develop hydrological watershed modeling.

March 15, 2021

RegionalModelingMODFLOWandFlopyTutorial%2B%25281%2529.jpg

March 15, 2021

Online Course: Regional Groundwater Modeling with Modflow, Model Muse and Flopy

March 15, 2021

This course covers the whole procedure of developing regional groundwater models through the ModelMuse interface, including the model construction, boundary conditions, parameter assignment, model simulation, results analysis and visualization, and model calibration. Flopy is also introduced in the course to import, create, refine and simulate the model as in ModelMuse. Two basins with different aquifer setting and boundary conditions are used as case studies to demonstrate the use of these tools so that the participants learn how to build these models and analyze the results for future decision-making.

March 15, 2021

February 23, 2021

Online Course: Mine Closure Groundwater Flow Modeling and Assessment of Remediation Techniques with Modflow, Model Muse and Flopy

February 23, 2021

Evaluation of long term impacts of the mining activity is a key topic on the public concern and regulatory and sustainability policies. Due to the scale of the mining projects and the different related activities, impacts could be made to several parts of the physical environment. Groundwater modeling is a useful tool for the simulation of mine closure impacts to the groundwater flow system and groundwater quality. Hatarilabs has developed an applied course about the simulation, calibration, representation and impact analysis of a waste dump closure on the environment and water bodies with a long term scope (closure and post closure). The course will be given on Model Muse for flow and contaminant transport modeling and scripts in Flopy for model calibration, water balance analysis and evaluation of remediation techniques performance.

February 23, 2021

December 4, 2020

Online Course: Python for Hydrology

December 4, 2020

This course is focused on how to use the different packages related to numerical tools, data analysis, representation of graphs, and others. Many of these tools are applicable to the field of Hydrology in the preparation of data for hydrological models, statistical analysis of hydrological parameters and model result representation.

December 4, 2020

MODFLOW6BasicExample_IsometricViewWaterTablewithEquipotentialSurfacesandBC.png

December 4, 2020

Online Course: Applied Groundwater Flow Modeling with MODFLOW, Python and Flopy

December 4, 2020

Graphical user interfaces (GUIs) are commonly used to construct and post-process numerical groundwater flow. Flopy is the Python library that builds and executes MODFLOW models; this library has tools and options for the complete geo-referencing of a MODFLOW model.

Python is a simple and powerful programming language; its simplicity is remarkable compared to other programming languages and its power is based on the number of tools available for different areas of study.

Use of Python with the available scientific packages and FloPy, facilitates data exploration, alternative model evaluations and model analyses that can be difficult to perform with GUIs. One advantage of Flopy and Python is that there are many packages available to facilitate the model development process, including packages for plotting, array manipulation, optimization, and data analysis.

This course allows acquired knowledge of the open source programming language to construct model input files, run the model, and read and plot simulation results.

December 4, 2020

Latest Posts

July 23, 2026

How to Interpolate Over 2 Million Points Quickly and Without Freezing - Tutorial

July 23, 2026

Interpolating large volumes of spatial data through the QGIS graphical interface is often a headache: the process takes too long or, even worse, the program freezes while consuming all system resources. In this tutorial, we will show you how to interpolate nearly 2 million points in less than two minutes using the OSGeo4W Shell and GDAL commands with the IDW method. By creating a virtual layer file (.vrt), you will learn a highly efficient, reliable, and lightweight workflow that enables you to work with millions of data points without being constrained by the limits of the GUI.

July 23, 2026

July 17, 2026

Plotting Water Surface Elevation from a 2D HEC-RAS Model using Python - Tutorial

July 17, 2026

This tutorial demonstrates how to accurately and efficiently extract the water surface elevation at a specific point from a HEC-RAS 2D unsteady flow model using Python in Jupyter Lab. Since water levels vary across the mesh and native software tools can limit automation, the author teaches how to open HDF5 output files (.hdf), load a point shapefile using GeoPandas, and apply a geospatial index K-d tree to locate the nearest computational cell. Finally, the time series data is processed to generate a water level hydrograph, which is essential for hydrogeological model calibration.

July 17, 2026

July 2, 2026

Advanced Crop Water Demand Modeling: Simulating ETo, ETc, and ETa with Python and pyfao56 - Tutorial

July 2, 2026

estimations of crop water requirements. This applied case offers a deep dive into modeling crop evapotranspiration using the standardized FAO-56 Dual Crop Coefficient methodology, implemented programmatically through Python.

Using a real-world case study of olive cultivation (Olea europaea) in the hyper-arid coastal desert of Bella Unión (Arequipa, Peru), we will demonstrate how to build an end-to-end hydrological data pipeline. Participants will learn how to integrate spatial data, process satellite-derived and weather station climate parameters, define soil-water-crop constraints, and simulate complex deficit drip-irrigation schedules.

July 2, 2026

unsteadyTransient2DRiverFlowModelingWithHECRAS_en_12.png

June 30, 2026

Unsteady / transient 2D river flow modeling with HECRAS - Tutorial

June 30, 2026

This applied example demonstrates the simulation of unsteady flow around a river island, guiding you through the complete numerical modeling workflow. It begins with pre-processing, covering spatial data import, boundary condition definition, and computational mesh generation. Next, the setup details importing hydraulic loading data from DSS files and optimizing the computational time step based on the Courant condition to ensure strict numerical stability and convergence. Finally, the example features a comprehensive post-processing review of the simulation results, analyzing velocity fields, water surface profiles (stages), particle tracking, and immersive 3D visualizations.

June 30, 2026

April 29, 2026

Automatic calibration of pumping test data with MODFLOW6, Model Muse and Pest - Tutorial

April 29, 2026

This tutorial walks hydrogeologists through the full workflow of automatic calibration of pumping test data using MODFLOW 6, ModelMuse, and PEST. A real pumping test scenario — comprising a 6-hour pumping phase and an 18-hour recovery phase — is set up in ModelMuse, where the well is conceptualized as a Multinode Aquifer Well (MAW) boundary condition to accurately represent multilayer aquifer interactions. PEST is then implemented to automatically estimate key hydraulic parameters including hydraulic conductivity, specific storage, and specific yield, eliminating tedious manual calibration and delivering reproducible, optimized results. Whether you're new to parameter estimation or looking to streamline your existing workflow, this tutorial offers a practical, hands-on guide to modern groundwater model calibration.

April 29, 2026

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How to generate a legend on map canvas in QGIS with PyQGIS - Tutorial

PyQGIS

Tutorial

Hatari Labs

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Recommended courses:

Course of Groundwater Modeling in Mining with MODFLOW6, Flopy and mf6Voronoi

Course of Groundwater Modelling using MODFLOW 6 and Model Muse

Course of Applied Hydrological Modeling with HEC-HMS

Course of Applied Geochemical Modeling with Phreeqc and Python

Course of Automatic MODFLOW6 Model Calibration with PEST and Model Muse

Blog

PyQGIS

Tutorial

Hatari Labs

Contact us:

WhatsApp

Coming soon:

Recommended courses:

Course of Groundwater Modeling in Mining with MODFLOW6, Flopy and mf6Voronoi

Course of Groundwater Modelling using MODFLOW 6 and Model Muse

Course of Applied Hydrological Modeling with HEC-HMS

Course of Applied Geochemical Modeling with Phreeqc and Python

Course of Automatic MODFLOW6 Model Calibration with PEST and Model Muse

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