Archive for the ‘GIS-Lab’ Category

Open GIS! is a conference for users and developers of open-source GIS. It will take place on November 17-18, 2012 in Moscow, Russia. The really cool thing is that participation in this crowd-source conference is free of charge!!! Of course modest donations will be appreciated and a sponsorship as well, but it is not mandatory – we want this event to be available for everyone who are interested in open geospatial software and data. Download leaflet!

A call for papers will be opened in August but already now you may propose topics of your talk or master-class to the committee.

Please, spread the word!

P.S. If you are a rear person who interested in illegal dumping research (from geospatial point of view) – come to this conference to hear my talk on it!

It’s actually already two month old news, but my research “Developement of the Universal Methodology for Assessement of Environmental Risk Caused by Fires at Illegal Dumps” (download in RUSSIAN), that was made special for Fire Monitoring Challenge (by GIS-Lab, Microsoft, NEXTGIS, several universities and GIS/spatial data corporations), was  awarded the 2-nd pace. The prize consisted of the fancy diploma, Lenovo IdeaPad G560 (thanks to all the gods it became much less uglier when I’ve installed openSUSE at it and applied an OSM sticker 😉 ), a wireless mouse (my wife was happy to grab it) and a nice book on remote sensing for children.

Instead of abstract:

Developed methodology for assessment of the fire probability in dependence of spatial location and actual area of illegal dump. It is applicable for any part of the world. Software used: QGIS, R.

Spatial component of the probability of the fire at illegal dump in Leningrad region, Russia

I was lucky to present this research at two conferences and today I’ve received a printed “minor” publication of the article (it is beta-version of the paper available at the link above). So it is possible now to cite it as:

Yury V. Ryabov (2011) Razrabotka univercal’noy metodiki rascheta veroyatnosti vozniknovenia pozhara na nesankcionirovennoy svalke // Sbornik nauchnih trudov molodyh specialistov, prepodavateley i aspirantov po resultatam provedenia Tret’ego molodezрnogo ecologichescogo congressa “Severnaya palmira”, 21-22 noyabria 2011, Sankt-Peterburg. – SPb NICEB RAN – pp. 93-106.

To Do: develope formula for composition coefficient calculation; translation to English; major publication.

P.S. If you are interested in this research and do not speak Russian don’t hesitate to contact me and ask for general translation.

OrbView-3 high resolution imagery became available as a public domain recently. One can access it via USGS’s EarthExplorer.

GIS-Lab decided to make a shp-file catalogue for the available imagery to have quick access to the metadata and coverage. You can download it here.

OrbView-3 coverage

 

PS. I’m glad I was able to help a bit with that.

New symbology in QGIS allow to create sophisticated convenient notation. And it will be more powerful in future QGIS version 1.7.
Here some approaches to symbols creation will be demonstrated with the specific example. You can see an example of the very difficult symbol to create – a river lock:
“Lock” symbol
It might be difficult to believe that it is possible to create symbol like this, but the proof is right here. That’s how it looks like after export from  the Print Composer:
Symbol “lock” in QGIS (river is in another layer).

How to create such beauty?

(more…)

As you may know, old_bibigon and I are working at the project for notation conventions for QGIS. Symbols are created for the current stable release of the QGIS – 1.6.0-4.3.

I would like to show you the draft of the symbols for roads.

Symbols for roads (draft)

There are 2 scale versions for each symbol. The scale is marked at the end of the symbol’s name. For example “…50k-100k” means that this symbol designed for scales of 1:50 000 and 1:100 000.

Because of the possibility to create the same symbol in different ways, some symbols at the picture above (3rd and 4th at the 2nd line from the bottom for example) were designed in several versions. These symbols look different, even if they were not supposed to. One version has the exact parameters of its size, but has a lack of contrast and the other looks more attractive for it contrast (the colours are actually the same for the both versions) but there are some issues with the offset settings: seems that there are different units for the offset and width settings.

Some notation conventions (as embankments – 4th in the 4th line from the top, tunnels, etc.) will be created only as an examples and won’t be adjusted for each type of road – the user will do it if needed.

QGIS has a powerful tool to create notation conventions (polygons and polylines) called “new symbology”, but initial stock of symbols (polygons and polylines) is extremely poor. I proposed a project to create a set of notation conventions for QGIS at the last GIS-Lab party. old_Bibigon (who already created notation conventions for exports of OSM to QGIS project) liked the idea and we decided to run this project together.
We are going to create a set of notation conventions which are used for the Russian topographic maps for scales 1:25000, 1:50000 and 1:100000. Of course these symbols could be used not only for topographic maps design. I’ve searched across the web and found this source of notation conventions the most convenient. Over 300 different lines and polygons, and at least several dozens of SVG-markers are about to be created.
Of course there are a lot of obstacles as in any project. Firstly, QGIS does not allow to use more than one library of symbols and there are no instruments for library import/export. Hope that  my request on that matter will not go in vain. For now old_Bibigon designed two python scripts: one for disassembling and another for assembling of the “symbology-ng-style.xml” (defines stiles of symbols for a given user).
Another problem is that QGIS does not allow to use fonts (only SVG markers are allowed) for polygons and polylines design. So a lot of fonts with needed symbols which I have or which can be discovered or shared by someone are completely useless. We have to design all needed symbols as SVG markers. old_Bibigon agreed to take care of this. Seems that I delegated all the dirty work to him 😉

Progress will be reported.

I believe I have to repost this for GIS-Lab…
On the 11 of December my wife an I arrived to the Leningrad railway station in Moscow.  I always try to achieve two or more goals with a single effort so the goals of this trip were to take part in the GIS-Lab party and to let my wife spend some time with her friend Marusia.
It was my 3-rd night running to spend in a train and on the way back I was going to equal my previous 4 nights running record established this November with a business trip St. Petersburg → Petrozavodsk  → Kosomuksha  → Petrozvodsk  → St. Petersburg and all trips were in night (unfortunately there always were no more than 7 hours to sleep). Actually for the last 3 weeks I had to work extremely hard and slept for 4-6 hours per day. I was so tired that on the way to the wife’s friend in metro I used a well known opportunity to sleep in the train on the circular line. It is a really cool thing this circular line)))
Our first goal was to meet Marusia. On Friday we received a message from Marusia that she is in hospital now.  On Tuesday she decided to dye her hair in some hairdressing salon with a very expensive dye. A hairdresser performed some kind of allergy test with her which showed that Marusia had no allergic reaction with this, but… The next day an ambulance took her with a swelled face to the hospital for allergic persons. 
After the hospital my wife and I moved to the Manezh Centrall Exgibittion Hall to take a look at the photographic exhibition. At the Manezh Square we saw a lot of youngsters who looked like a soccer fans. Many of them had masks on their faces… An hour and a half later when we wanted to leave the Manezh Hall, the security told us that the doors are sealed and no one able to enter the building or leave it. The reason was unrest
While the raged mob tried to break in, people captured inside the Manezh Hall remained calm but little bored with a necessity to stay inside for a while. Luckily  there was a cafe ion the 3-rd floor We used an opportunity to eat something and take a nap.  Fortunately mindless hooligans were hurled back  soon and the pass to the metro was cleared.
We were only 20 minuets late to the GIS-Lab party – the main event of the day. It was a first time when I was able to take part in it. Twice before I wanted to come, but every time some obstacles prevented me from the trip. Even this time my employer asked me to work on Suturday despite I worked for 14 hours per day without holidays over 3 weeks (but it is another story), and these hooligans who captured us inside the Manezh…
I was glad to see people whom I knew only by virtual communication at the forum ind IRC. An interesting notice: at least 6 people (1/3 of all participants) at the party related to the ecology. I’m confused with conclusions but never the less…
A future plans of the community development were discussed. Maxim Dubinin told that he wants to save some time for his personal life and delegate some of his functions to the some kind of council. This step in GIS-Lab community development should also improve its sustainability. Of course it is necessary to transfer responsibility, but the process might be somewhat painful for the person who was in charge for all these years because the opinion of the future council might be quite different to his own. Discussion about the sandbox for the GIS-articles is an example. It was hard but the participants convinced Maxim to give a chance to the some kind of personal blogs instead of wiki to write the articles about GIS.
There was a brief discussion about the commercialisation of the GIS-Lab, but it ended up with the strong opinion of the majority that this will not gonna happen anytime soon and if this ever will occur it will destroy the community.
Another topic was future GIS-Lab’s projects. I proposed creation of the data set of the conventional signs for QGIS. All the more the new symbology in QGIS is a powerful tool, but the initial data set is extremely poor. There were other interesting proposals and they will be described in the official blog of the GIS-Lab along with other topics of the meeting (link to the report). 
Unfortunately we had to move to the railway station and leave some interesting topics behind. I didn’t even said goodbye properly because we were talking about issues with spatial data access, while I was dressing up and leaving the room. 
They told me that the next meeting will take place in January… I highly doubt, but I will  be waiting for the next meeting – that’s for sure.

QGIS manual in Russian

Posted: October 14, 2010 in GIS, GIS-Lab, Public Activities
Tags: ,

is available now!!! Click here to download. Also several improvements were made in English version because of this translation. I’m glad I took part in it!

UPD: manual was updated to the 1.6.0.