Archive for the ‘GIS’ Category

Interpreting Data

Friday, June 19th, 2009

India is one of the countries where getting access to public data is very difficult. Through RTI has enable the citizens to file an application and get data, the scale to which it can be used to get national level data is limited indeed.

Even straight forward data such as rainfall data is not available to public. Recently IMD agreed to put up last five years data in public domain.

Data plays a crucial role in research, policy making, planning and implementation of public works etc. In India, most of the time data is either generated by a private institute or an international institute. Very few government websites provide current and relevant data to public. Department of Drinking Water Supply is one of the few government departments putting up data for public use.

The next challenge with data is its presentation. Providing people with raw data is good, but everybody will not be in a position to interpret data. Data, if presented in the right format, can overturn laws and policies. One such effort has been enabled by Google’s Fusion Tables. Now that google has solved the problem of visualisation, we Indians should get back to the business of collecting data and making it publicly available.

Below is a very good representation of Total Renewable Freshwater Supply across the world. If you can observer, India is not doing bad. China is doing even better. But both India and China will soon be water stressed countries since we are not harvesting the rains to the best of our efforts. I am sure that once we overcome the challenge of collecting data and its visualisation, we would have to solve the greatest problem of humanity – convincing fellow humans to act in the right direction

My new interests

Friday, May 8th, 2009

I am fascinated with maps. Google maps and Google Earth have been my favourite tools. I have been constantly experimenting with my GPS receiver to see how I can easily generate and convert location data and put it up online. Now my focus has shifted from ease to utility. How can I use GPS to generate/curate meaningful maps?

Today I came across this post on Google Lat Long blog. I thought of blogging a bit about my two new interests – GIS and Geology

GIS and geology are not related fields. But here is how my love for these two fields started.

Have you ever wondered what lies beneath the earth? Have you ever wondered how earth uses its forces to keep this planet going? Have you ever wondered why of all the objects in the universe, Earth is the only known place, so far, to have life?

I am not talking about some high-end science here. I am talking about the story of the planet Earth. I got deeply interested in the Earth’s story ever since I joined Arghyam. What has that got to do with the interest in geology? Simple – Water is so heavily goverened by geology that we have a new term for it – hydrogeology.

Two important documentary series that helped me find answers were – Earth Story, Power of the Planet

Since then I am a big fan of geology.

GIS, unlike geology, is an old love. GIS is a technology term that, from now on, I can use for my love for maps. Since high-school I am fascinated with maps. I find it easier to read maps and I am good at creating maps – on the paper. But tools such has google maps and earth, coupled with a GPS and a GIS tool, now enable me to create digital maps.

My entire K2K trip was mapped using a GPS. All the photographs are geotagged. Going further, I want to improve my proficiency in GIS technology. I have installed GRASS and QGIS on my Ubuntu machine. I have downloaded some presentations and ebooks related to GIS. I will keep you all posted of my new interest. But don’t miss the above two documentaries.

If you are interested in GIS – here is a good place to start – Map Action GIS Field Guide