[Gvsig_english] Calculating areas in the atribute table.

Fri Jan 25 13:31:46 CET 2008

Hi ,

With the support of avl, do you also plan to support the lyr files of  
esri.

Esri lyr is far more flexible than the old avl.  Coding with the use  
of more than one field just to name one, composition of symbols with  
many layers etc.

Also, by grouping many shape or entity (in geobase) it's easy to make  
a template for use in similar data structure.  Just loading the lyr  
and all the shapes or files are load with all the symbology.

For the labeling placement, do you have or plan, like in arcmap, the  
hability to make labeling base on sql querry (more than one label for  
a shape).  Also the hability to use a script to define the label like  
if "type"=1 than 'Private'

You said picture and svg.  What's about fonts?  Also, since labeling  
take computer power to calculate each time the position of labels, do  
and export to annotation be available.  In arcmap we finetune  
labeling than export to anno in a file geodatabase with great speed  
improvement and the leaving fine tuning of label placement.

One missing feature in basic arcmap who could be a big improvement  
is, the hability to manualy move labeling... When autolabeling, no  
mather the care, most of the time lable are not in the right place  
so....

Thant's for your good work,  waiting for a good labeling for use in  
mapmaking.

Marcel

Le 08-01-25 à 07:01, jaume domínguez faus a écrit :

> Thanks Wolfgang!
>
> Well, regarding point A, I recorded a video for the 3rd gvSIG  
> Conferences past November were I give some points about the comming  
> extended symbols, and legends. The video, I think, was distributed  
> in the DVD of the conferences and I thought that it was also  
> published in the web. But I took a walk around the website and I  
> couldn't find any reference to it.
>
> Anyway, while we wait for the hole documentation about the  
> conferences to be published in the web I'll upload the video to  
> YouTube this weekend if possible. I'll send a message to the list  
> if I'm successful.
>
> I also want to highlight that we are working in full SLD support  
> including new types of legends based up on expressions which will  
> allow to handle natively the OGC Filter spec. And after it we will  
> face the support for ESRI's AVL files taking profit of the new  
> extensible and driver-based design for legend files.
>
> This is regarding the symbols and legends. About the labels and  
> labelings well, I'm actually in debugging time and I want to record  
> another video demo regarding label placements with all the  
> possibilities (avoiding overlapping, place label in the best place  
> depending on the geometry type and shape, removing repeated labels  
> (not yet implemented but soon)) as well as label styles supporting  
> SVG files (and also PNG, GIF, JPEG) , label with multiple fields/ 
> texts calculated with user-defined expressions, labels with  
> priorities (not yet implemented but after the "remove repeated"  
> function), etc... I try to record it very soon (next days)
>
> Cheers!
> Salut!
>
> Best
>
>
>
> Wolfgang Qual wrote:
>> Hello Antonio,
>> yes, gvSIG rocks! And it is good to see that more and more people  
>> get interested in this program. Well, I'll try to answer your  
>> questions:
>>
>> regarding A)
>> as far as I know, gvsig-developers are very busy with enhancing  
>> options for labeling and symbols (legend). Hopefully,it will not  
>> take too long to see these features in a new version (All the  
>> best, Jaume!)
>>
>> regarding B)
>> recent versions of gvSIG (at least 1.1) provide a "field  
>> calculator". To be able to use it, you will have to follow these  
>> steps:
>>
>> 1) make the desired theme active, right-click - start editing
>> 2) open the attribute table of that theme, click on the attribute  
>> column for which you would like to calculate area, perimeter -->  
>> on the menu bar, there will appear a new symbol which looks like a  
>> calculator.
>> 3) This field calculator allows you to use differrent  
>> calculations, among others also area and perimeter. It's very  
>> similar to ArcView 3.2.
>> I also would like to mention that there is no automatical update  
>> of items like area and perimeter. This would really make sense.  
>> Developers?
>>
>> regarding C)
>> I fear that I do not the status of this feature. I agree that this  
>> would be nice to have.
>>
>> Cheers,
>> Wolfgang
>>
>>
>> -------- Original-Nachricht --------
>>
>>> Datum: Thu, 24 Jan 2008 14:28:15 -0000
>>> Von: "Antonio Gennarini" <AntonioGennarini at esinternational.com>
>>> An: gvsig_internacional at runas.cap.gva.es
>>> Betreff: [Gvsig_english] Calculating areas in the atribute table.
>>>
>>
>>
>>> Hi.
>>>
>>> First of all I'd like to express my compliments to all those who are
>>> participating to this project as I think that it's gret to have  
>>> such a
>>> comprehensive open source tool for GIS purposes. We are thinking of
>>> implementing the use of this software within our company but need to
>>> fully assess it's capabilities in order to make a correct judgement.
>>> I have several questions I need to ask hoping that someone of you  
>>> will
>>> find the time and patience to answer:
>>>
>>> A) I find the formatting of legends and labels in gvSIG a bit more
>>> complex than in ArcGIS. Any programs to enhance these features in  
>>> the
>>> future?
>>> B) One thing that I ind useful is creating fields in the  
>>> attribute table
>>> of polygon shapefiles and autoatically populating the columns with
>>> areas, coordinates, perimeters, etc. Is there some sort of  
>>> calculator
>>> for the attribute table? The area calculator button is useful but  
>>> not
>>> for this kind of operation.
>>> C) ArcGIS is good a putting grids on maps and the formatting of  
>>> these
>>> grids is relatively simple and powerful. I have not found a way  
>>> to stick
>>> the coordiante labels in the grids.
>>>
>>> Many thanks
>>>
>>>
>>> Antonio Gennarini
>>> Project Consultant
>>> -------------------------------------
>>> ESI Ltd
>>> Soil and Groundwater Specialists
>>> New Zealand House
>>> 160, Abbey Foregate
>>> Shrewsbury SY2 6FD
>>> Telephone: +44 (0)1743 276100 Direct Dial: +44 (0)1743 276145
>>> Fax: +44 (0)1743 248600
>>> Email antoniogennarini at esinternational.com
>>> <http://www.esinternational.com> Registered in England and Wales  
>>> number 3212832
>>> This email and any files transmitted with it are confidential and
>>> intended solely for the use of the individual or entity to whom  
>>> they are
>>> addressed.  They may also be legally privileged.  If you have  
>>> received
>>> this email in error please notify us by immediate reply and  
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>>>
>>> _______________________________________________
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>>>
>>
>>
>
>
> -- 
> Jaume Dominguez Faus
>
> Equip gvSIG
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