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Messages - subash

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Jakub Nowosad, a postdoc in the Space Informatics Lab at University of Cincinnati has develop these two courses on Spatial Analysis and GIS using R.

The relevant links are as follows:
Sample R Codes are also available with practical examples.

1. Introduction to Spatial Analysis using R.


2. GIS with R


3. Data Visualization and preprocessing

Link: 1.

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Interesting information / History of Hydrology Interviews
« on: July 07, 2018, 12:20:56 PM »
This video series provides source material that will be of particular interest to scientists and instructors in the field of hydrology. Through in-depth interviews captured on film, eminent hydrologists discuss achievements in hydrological science that have occurred during their careers. These interviews offer valuable insight into the progression of research in the field of hydrology during the second half of the 20th century.

1. Interview with Prof. Eric F Wood by Prof. M. Sivapalan.

2. Interview with Prof. M. Sivapalan by Prof. Ross Woods

3. Interview with Prof. Keith J Beven.

4. Interview with Georgia Destouni

5. Interview with Mike J Kirkby
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Demonstrating the “unit hydrograph” and flow routing processes involving active student participation – a university lecture experiment

 The unit hydrograph (UH) has been one of the most widely employed hydrological modelling techniques to predict rainfall–runoff behaviour of hydrological catchments, and is still used to this day. Its concept is based on the idea that a unit of effective precipitation per time unit (e.g. mm h−1) will always lead to a specific catchment response in runoff. Given its relevance, the UH is an important topic that is addressed in most (engineering) hydrology courses at all academic levels. While the principles of the UH seem to be simple and easy to understand, teaching experiences in the past suggest strong difficulties in students' perception of the UH theory and application. In order to facilitate a deeper understanding of the theory and application of the UH for students, we developed a simple and cheap lecture theatre experiment which involved active student participation. The seating of the students in the lecture theatre represented the hydrological catchment in its size and form. A set of plastic balls, prepared with a piece of magnetic strip to be tacked to any white/black board, each represented a unit amount of effective precipitation. The balls are evenly distributed over the lecture theatre and routed by some given rules down the catchment to the catchment outlet, where the resulting hydrograph is monitored and illustrated at the black/white board. The experiment allowed an illustration of the underlying principles of the UH, including stationarity, linearity, and superposition of the generated runoff and subsequent routing. In addition, some variations of the experimental setup extended the UH concept to demonstrate the impact of elevation, different runoff regimes, and non-uniform precipitation events on the resulting hydrograph. In summary, our own experience in the classroom, a first set of student exams, as well as student feedback and formal evaluation suggest that the integration of such an experiment deepened the learning experience by active participation. The experiment also initialized a more experienced based discussion of the theory and assumptions behind the UH. Finally, the experiment was a welcome break within a 3 h lecture setting, and great fun to prepare and run.

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Programming / Remote Sensing Code Library (RSCL)
« on: August 02, 2017, 10:23:20 AM »
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Data / Re: High resolution irrigation maps for India : 2000-2015
« on: February 09, 2017, 12:32:47 AM »
Thanks for sharing the information.
The link to updated maps @
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Announcements / Post-doctoral Researcher: UPSCAPE
« on: February 01, 2017, 04:21:00 PM »
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Programming / Python Resources for Hydrologists
« on: January 06, 2017, 12:09:07 AM »

Using Typeset you can write your content or upload your MS Word document, choose a relevant template and get the content formatted in seconds! The access is free to all students from IISc. All your documents would reside encrypted on the platform and only you will be able to access them. Also, you can export your documents any time into PDF/ LaTex/ Zip format. We have set up an exclusive access for IISc students. Click the following link to access Typeset and start progressing on your research today. (Platform can be accessed only via this link.) For any help or feedback, you can reach out to - Saikiran chandha(founder of Typeset) at"
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I created a list of important groups to keep up to date with opportunities (graduate + postdoc + tenure track jobs) in hydrology and in general earth sciences. Hope it helps!

Also, you can find my facebook group where I try to post graduate opportunities in hydrology and climate change.
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Programming / RQGIS
« on: August 16, 2016, 09:43:43 PM »
RQGIS 0.1.0 release

"RQGIS establishes an interface between R and QGIS, i.e. it allows the user to access the more than 1000 QGIS geoalgorithms from within R. "
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Programming / Mapping in MATLAB
« on: July 11, 2016, 11:41:05 PM »
MATLAB has an extensively developed mapping toolbox for preparing geospatial images. Users can perform operations such as altering the projection system, reading the KML and shapefiles etc.

User manual and reference guide for MATLAB R2016a can be obtained from the links below:

Also, link below provides a good description of the toolbox with the aid of examples:

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Announcements / New feature added in the forum
« on: June 16, 2016, 06:20:12 PM »
Dear all,
Now you can use the "Say Thanks" option to thank a user for his/her post/reply.
You can see this option in each posts.
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