OpenJUMP, auto assign attribute

This post will present a new videotutorial for ArcheOS 5 (codename Theodoric), regarding the software OpenJUMP.

Like for this other article, also in this case I chose to use a real project, to show the potentialities of ArcheOS in different archaeological missions. The main objective of the work was the inspection of an high mountain area (more than 3000 meters above the sea level), in order to verify the possible presence of historical remains connected with the World War I. One of my specific needs to prepare the mission was the setting of a GIS system, updating a geological vector map of the whole province in which I was operating. Luckily this province (Trentino) is at the forefront (in Italy) for the distribution and use of geographical open data, so I had no problems in finding the base map I mentioned before; the main work has been the updating of the database, connected with the vector layer, in which I had to insert some additional informations that were stored in an external spreadsheet.

In short, what I did in OpenJUMP is:

1. Query the Area Of Interest (AOI) of my project in the vector base map, in order to visualize a numerical code that was connected with the additional data in the spreadsheet

2. Edit the database schema of the vector map to add two new fields for the additional informations

3. Check the spreadsheet to read the values connected to the numerical code of the vector map

4. Query the vector map to select all the regions with the numerical code of my AOI (which would share with it all the same additional informations)

5. Use the Auto Assign Attributes Tool to fill (for all the selected regions) the new empty database fields with the right values

6. Repeat the operations till all the vector map has been updated with the additional informations

This videotutorial shows the main operations. I hope it will be usefull for you. As usual I uploaded it also in the DADP wiki.

Have a nice day!

Raw data to WKT: a polygon

Hi all,
this is the last (for a while) videotutorial of the mini-series regarding WKT code. This time we see how to draw a polygon. As usual, you'll find the video also on the DADP wiki. Here is the video, I hope you'll find it useful!

Raw data to WKT: a line

Hi all,

Again a short videotutorial about FLOSS in archeology. In the last one we saw how to turn raw data (from the total station) into the WKT code of a point; this time we will see how to create a line. 

This videotutorial is also available on the DADP wiki (I updated the old tutorial). 

Like before, the system I am using is a preview version of ArcheOS Theodoric, done building the iso image just following the instruction of the readme file on the github page.

Now, thanks to +Fabrizio Furnari we also have the project for an ArcheOS manual (still work in progress). If you want to help us, you will find the code on the github page (yes, we like github very much...). 

A great help it would be to translate these videotutorials into text :). If you want to participate to the documentation, you can contact us in many ways (also commenting this post), like the official IRC channel #archeos, or the developer mailing list (for more info, read the text here)

Here is the video, I hope it will be useful!

Raw data to WKT: a point

Hi all,

I go on in recording basic videotutorial about FLOSS in archeology. This time I show how to turn raw data (from the total station) into WKT, starting with the simplest shape (a point). 

Like always I will upload this material on the DADP wiki, udpdating the old tutorial (I am using a preview version of ArcheOS Theodoric).

Here is the video, I hope it will be useful!

QuantumGIS and OpenJump: Photomapping with more pictures (Corte Inferiore method)

Hi all,
i would like to share a new method to realize georeferenced 2D-photomosaic. Thanks to the new version of OpenJump (r3856), now it is possible to export the GIS-view to any kind of resolution (no more block to 3800 width-pixel). Just set in the oj_linux.sh file (OpenJump bin folder) the allowed memory in the line 24

JAVA_MAXMEM=${JAVA_MAXMEM--Xmx2048M}

with 2048M my computer can export GIS-view till the value of 6905 width-pixel. More memory gives more resolution.

This is the videotutorial:

and this an example:

OpenJUMP: adding a vector layer with a customized db

Hi all,

today I recorder a fast videotutorial regarding the GIS OpenJUMP (which is one of the Geographic software integrated in ArcheOS).

Normally, when you add a new vector layer in your project, you get a new empty level, without any database schema, so that you can start to draw your feature, but, if you want to add some info, you have to manually describe your db schema, like in the video below:

Of course, if you have to draw many different layers with a common database schema (like always happen in a normal archelogical GIS), this operation can be time-consuming (and boring). For this reason in the videotutorial below I try to show how to write a short script which automatically add in OpenJUMP a new vector layer with a customized database schema:

Since I fear the quality of the video is too poor in Youtube, I prepared an image in which you can see better the source code of the script:

The code of the script

To work correctly, the script has to be placed in your OpenJUMP folder, in /lib/ext/BeanTools/ and, as you see in the video, you have to refresh the menu in OpenJUMP (Customize --> BeanTools --> RefreshScriptMenu) to find it (in ArccheOS Caesar you will find the script already in the menu. Just modify the code according to your needs).

Like always I added the tutorial in our ArcheOS wiki (DADP project), in order to go on in composing a free documentation system for Digital Archaeology: 

• Tutorial 1
• Tutorial 2

I also uploaded the code of the script into a specific github repository, so that, if you want, you can contribute in its development. We can use the comment space of this post for the discussion about the schema and about its possible modifications (or you can simply download the script and modify it in order to fulfill your specific needs).

I hope it was useful, have a nice day!

File conversion with TOPS (Total Open Station)

HI all,

today I had to convert some raw total station data from Trimble file format (.are) into something simpler and more readable, like a csv file (Comma Separated Value), in order to further process my points and load them inside a GIS. To perform this operation I used a specific software which you can find in ArcheOS: Total Open Station. 

This tool is developed by +Stefano Costa and Luca Bianconi. Here you can find the official website.
I record a short videotutorial about the file conversion. You can see it in the video below.

As usual, I uploaded it also in the Digital Archaeological Documentation Project of Innsbruck University. Here is the direct link.
I hope it will be useful.
Have a nice day!