[Qgis-user] problem in plugin writting

[Bijay Panda]

Hi List,
I am new to QGIS.Actually i want to write plugins for QGIS.
I am using ubuntu 8.04.I installed QGIS 1.0.0 from package manager.
Now its  showing those things installed in my machine.
qgis
qgis-plugin-grass
qgit
qgo

but while compiling a sample program for writing a plugin from vector to
pointconversion it's
showing error
qgisplugin.h: No such file or directory
I tried to find it  by locate command but it's not there anywhere.
The QGIS document says it should be in src/plugins/qgisplugins.h
should i installed this from some package.if so then how can i find that.
Plz some one help me out.

-- 
Thanks & Regards
Bijay
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Re: [Qgis-user] Ideas for QGIS plugin?

[Martin Dobias]

On Tue, Feb 3, 2009 at 10:33 PM,   wrote:
> Is it possible to have a second transparent map canvas, analogous to the 
> Mapinfo cosmetic layer.
>
> This would allow, for example, a complex background map to remain static so a 
> gps layer in the new canvas can be quickly refreshed without refreshing the 
> entire map & all the background layers, unless, of couser, the map extent 
> changes.
>
> There are several times I've made simple changes to a small layer & QGIS 
> takes some time to re-render everything, when 99% of the refresh doesn't 
> actually change anything.
>
> This could be accomplished by having two map canvases, so users could add 
> static layers to the bottom one & more dynamic ones to the top one, to suit 
> their needs.

This is already possible. But instead of cosmetic layer we talk about
canvas items: map canvas contains rendered map and optionally any
number of other map canvas items (see QgsMapCanvasItem class). Canvas
items can be updated whenever needed and no re-render of map is
required. Also rubber band (see QgsRubberBand) which is used for
measuring distances and areas is a canvas item.

Martin
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Re: [Qgis-user] Ideas for QGIS plugin?

[pcreso]

Is it possible to have a second transparent map canvas, analogous to the 
Mapinfo cosmetic layer.

This would allow, for example, a complex background map to remain static so a 
gps layer in the new canvas can be quickly refreshed without refreshing the 
entire map & all the background layers, unless, of couser, the map extent 
changes.

There are several times I've made simple changes to a small layer & QGIS takes 
some time to re-render everything, when 99% of the refresh doesn't actually 
change anything.

This could be accomplished by having two map canvases, so users could add 
static layers to the bottom one & more dynamic ones to the top one, to suit 
their needs.


Cheers,

   Brent Wood
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[Qgis-user] Confirmation of compiling of QGIS 1.0 on Mandriva 2009 x86_64

[Mikhail Umorin]

I compiled 1.0.0-Kore (code revision 10094) with PostgreSQL, Python and
Grass support, against Qt 4.4.3 on Intel,  on Mandriva 2009, x86_64.

Following compilation complaints/warnings:

...
[ 65%] Generating core/core.so

   
/usr/share/sip/PyQt4/QtCore/qmap.sip: In function ‘PyObject*
convertFrom_QMap_1800_0200QgsGeometry(void*, PyObject*)’:

   

 
/usr/share/sip/PyQt4/QtCore/qmap.sip:170: warning: suggest explicit
braces to avoid ambiguous ‘else’   
/usr/share/sip/PyQt4/QtCore/qmap.sip: In function ‘PyObject*
convertFrom_QMap_1800_0200QgsField(void*, PyObject*)’:   

   

 
/usr/share/sip/PyQt4/QtCore/qmap.sip:170: warning: suggest explicit
braces to avoid ambiguous ‘else’   
[ 65%] Generating gui/gui.so  

   
[ 66%] Built target python

   
[ 67%] Generating ui_qgshelpviewerbase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/helpviewer/qgshelpviewerbase.ui: An
invalid icon property 'windowIcon' was encountered.

   

  
...
[ 71%] Generating ui_pluginguibase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/copyright_label/pluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

   


[ 71%] Generating moc_plugin.cxx 
...
[ 73%] Generating ui_qgsdelimitedtextpluginguibase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/delimited_text/qgsdelimitedtextpluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

  
[ 73%] Generating moc_qgsdelimitedtextplugin.cxx  
...
[ 81%] Generating ui_pluginguibase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/north_arrow/pluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

   


[ 81%] Generating moc_plugin.cxx  

   
...
[ 82%] Generating ui_pluginguibase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/scale_bar/pluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

   

  
[ 82%] Generating moc_plugin.cxx 
...
[ 85%] Generating ui_qgsgpspluginguibase.h

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/gps_importer/qgsgpspluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

  
Scanning dependencies of target gpsimporterplugin 

   
...
[ 90%] Generating ui_pluginguibase.h  

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/pluginguibase.ui:
An invalid icon property 'windowIcon' was encountered. 

   

  
[ 90%] Generating ui_qgspointdialogbase.h 

   
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/qgspointdialogbase.ui:
An invalid icon property 'icon' was encountered.   

  
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/qgspointdialogbase.ui:
An invalid icon property 'icon' was encountered.   

  
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/qgspointdialogbase.ui:
An invalid icon property 'icon' was encountered.   

  
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/qgspointdialogbase.ui:
An invalid icon property 'icon' was encountered.   

  
/var/Archives/qgis/qgis_1.0.0/src/plugins/georeferencer/qgs

Re: [Qgis-user] Compilation errors: which list?

[Jürgen E . Fischer]

Hi Augustin,

On Tue, 03. Feb 2009 at 12:28:59 +0100, Agustin Lobo wrote:
> Where should I address questions on errors and problems at compiling 
> QGIS, to this list or to the one of devs?

Questions on qgis-developer.  Error/problems on TRAC or qgis-developer.
The latter if you are not sure, if it's a bug or a problem with your
setup.


Jürgen

-- 
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Software Engineer D-26506 Norden   http://www.norbit.de

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[Qgis-user] Compilation errors: which list?

[Agustin Lobo]

Where should I address questions on errors and problems at compiling 
QGIS, to this list or to the one of devs?


Thanks

--
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: agustin.l...@ija.csic.es
http://www.ija.csic.es/gt/obster
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AW: [Qgis-user] Ideas for QGIS plugin?

[Merkes Dirk]

Hi Carson,

the projection isn`t in the standard CRSs. Somebody told me that it isn`t 
possible to define this projection. I'm looking for the projection code in 
proj4, but I could't found anything. Somebody told me that it isn't possible to 
create something like that. So I hoped that it would be possible to create 
aplugin to convert from UTM to MGRS. The MGRS (or UTMREF) is based on the WGS 
84 coordinate system. You can find an description of MGRS here:
http://en.wikipedia.org/wiki/Military_grid_reference_system
Thank you for your answer.

Dirk


-Ursprüngliche Nachricht-
Von: Carson Farmer [mailto:carson.far...@gmail.com]
Gesendet: Dienstag, 3. Februar 2009 11:49
An: Merkes Dirk
Cc: qgis-user@lists.osgeo.org
Betreff: Re: [Qgis-user] Ideas for QGIS plugin?


Hi Dirk,
> Dear QGIS users,
>
> I`am using QGIS in our local volunteer fire brigade headquaters. At the 
> moment I'am using the WGS 84 coordinate system, but all rescue units in 
> Germany are using the MGRS or UTMREF coordinate system. I haven`t found a way 
> to create an own projection in QGIS in MGRS or UTMREF because I`m a absolutly 
> beginner in QGIS.
1) If the projections you mentioned above are standard CRSs, chances are 
they are in the QGIS database, and you should be able to located them in 
'File' > 'Project properties' > 'Coordinate Reference System (CRS)'. If 
they are indeed there, great, the skip the next step...

2) If your CRS is not in the QGIS database, then you can create a custom 
CRS by going to 'Edit' > 'Custom Projection'. Here you will have to 
specify a valid proj.4 string, and you can test it to make sure all the 
parameters are correct...

3) Now it's as simple as right clicking on the layer in the layer list, 
and selecting 'Save as shapefile'. Once you've specified the output file 
name, a dialog will pop up with the list of available CRSs, choose the 
one you want to project your data to, and voila! If you had to create a 
custom CRS, this will be located in the 'User defined coordinate system' 
section.

Hope this helps,

Carson

-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: carson.far...@gmail.com
Web:   http://www.carsonfarmer.com/
   http://www.ftools.ca/


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Re: [Qgis-user] Color table for raster map

[Carson Farmer]

Agustin Lobo wrote:

Thanks. Then, in order to make, for example, a standard
terrain table, the best is that I make it with R and save
in qgis table format, right? It would be nice having a tool
reproducing the colorbrewer. Perhaps we could do it
through R thanks to manageR. Opinions?
You certainly could do this in manageR using the R methods, but in terms 
of as a colour brewer plugin for creating colour tables? This is 
probably best implemented separately I think, though you could still 
take advantage of the implementation used in R... How does R do it, is 
there calculations involved, or are the colour tables all 
specified/stored already?


Carson

--
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: carson.far...@gmail.com
Web:   http://www.carsonfarmer.com/
  http://www.ftools.ca/


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Re: [Qgis-user] Ideas for QGIS plugin?

[Carson Farmer]

Hi Dirk,

Dear QGIS users,

I`am using QGIS in our local volunteer fire brigade headquaters. At the moment 
I'am using the WGS 84 coordinate system, but all rescue units in Germany are 
using the MGRS or UTMREF coordinate system. I haven`t found a way to create an 
own projection in QGIS in MGRS or UTMREF because I`m a absolutly beginner in 
QGIS.
1) If the projections you mentioned above are standard CRSs, chances are 
they are in the QGIS database, and you should be able to located them in 
'File' > 'Project properties' > 'Coordinate Reference System (CRS)'. If 
they are indeed there, great, the skip the next step...


2) If your CRS is not in the QGIS database, then you can create a custom 
CRS by going to 'Edit' > 'Custom Projection'. Here you will have to 
specify a valid proj.4 string, and you can test it to make sure all the 
parameters are correct...


3) Now it's as simple as right clicking on the layer in the layer list, 
and selecting 'Save as shapefile'. Once you've specified the output file 
name, a dialog will pop up with the list of available CRSs, choose the 
one you want to project your data to, and voila! If you had to create a 
custom CRS, this will be located in the 'User defined coordinate system' 
section.


Hope this helps,

Carson

--
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation (NCG),
Email: carson.far...@gmail.com
Web:   http://www.carsonfarmer.com/
  http://www.ftools.ca/


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Re: [Qgis-user] Ideas for QGIS plugin?

[Merkes Dirk]

Dear QGIS users,

I`am using QGIS in our local volunteer fire brigade headquaters. At the moment 
I'am using the WGS 84 coordinate system, but all rescue units in Germany are 
using the MGRS or UTMREF coordinate system. I haven`t found a way to create an 
own projection in QGIS in MGRS or UTMREF because I`m a absolutly beginner in 
QGIS. I hope there is a way with a plugin like the Coordinate Capture to 
convert UTM to MGRS or UTMREF coordinates. Does anybody has a solution for the 
problem? Thanks for your help...

Dirk



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Rathausplatz 1 - 54584 Jünkerath
Postfach 11 20 - 54581 Jünkerath
Telefon:(0 65 97) 16-159
Fax:(0 65 97) 16-128
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Internet :  www.oberekyll.de

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Re: [Qgis-user] Color table for raster map

[Agustin Lobo]

Thanks. Then, in order to make, for example, a standard
terrain table, the best is that I make it with R and save
in qgis table format, right? It would be nice having a tool
reproducing the colorbrewer. Perhaps we could do it
through R thanks to manageR. Opinions?

Agus

Peter Ersts wrote:

Agustin,

Sorry for my delayed response.

The three color ramp types are, Exact, Discrete, and Interpolated. 
Interpolated is the type you are looking for, I has seriously considered 
changing it to linear.


If you have two entries in your color table 0 = black 10 = white.
0 ,0,0,0,255,Black
10,255,255,255,255, White

Exact will only shade pixel values 0 and 10, all other pixel values will 
be ignored.


Discrete is like a bin ( 0 <= pixel < 10 shade as white) so pixel value 
of 5 would he shaded as white ( 255, 255, 255, 255 )


Interpolated is basically a linear interpolation between two colors. In 
this example 5 would be shaded as ( 128, 128, 128, 255 ).  **note, 
currently the alpha value is always 255 for the interpolated color and 
should probably be marked as a bug.


-pete

Agustin Lobo wrote:

Peter,

What would be the equivalent rules for a continuous pseudocolor table
(i.e., INTERPOLATION::LINEAR ?)
Actually, do you have some standard pseudocolor tables (i.e., terrain
colors) already made?

Thanks
Agus

2009/1/14 Peter Ersts :
 
The easies way is to make a text file (classification.txt) and add 
the color

entries by hand. So the contents of the file will look like:

INTERPOLATION::EXACT
11,0,0,255,255,Post-flooding or irrigated croplands (or aquatic)
14,0,255,0,255,Rainfed croplands
20,255,0,255,Mosaic cropland (50-70%) / vegetation
(grassland/shrubland/forest) (20-50%)


This will set pixels 11 to blue, 14 to green and 20 to red. The 
format is

really basic.
pixel value, red, green, blue, alpha, label (no commas)

Then on the colormap tab, you can click the "Load color map from file"
button, second one from the top right.

Eventually it is planned that it will be able to read a variety of 
different

colormap formats.

-pete

Agustin Lobo wrote:
   

I've got a landcover map in raster format (a tif file)
from GLOBOVER
(http://postel.mediasfrance.org/en/BIOGEOPHYSICAL-PRODUCTS/Land-Cover/)
The raster is opened in QGIS as "Single Band Grey"
How can I set an arbitrary color table? I can see how
to set a ramp, but this is a classified image, in which
integer values stand for different types
i,e,:
11Post-flooding or irrigated croplands (or aquatic)
14Rainfed croplands
20Mosaic cropland (50-70%) / vegetation 
(grassland/shrubland/forest)

(20-50%)

for which different colors should be set as in "unique value"
for vector maps.

Thanks

Agus
  





--
Dr. Agustin Lobo
Institut de Ciencies de la Terra "Jaume Almera" (CSIC)
LLuis Sole Sabaris s/n
08028 Barcelona
Spain
Tel. 34 934095410
Fax. 34 934110012
email: agustin.l...@ija.csic.es
http://www.ija.csic.es/gt/obster
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