[Qgis-user] Qqis Mac standalone fix + plugin development addition

[William Kyngesburye]

I fixed a problem in the standalone version that caused various issues from not 
running to errors in python plugins.

I also added (to standalone and full version) the PyQt utilities for compiling 
UI and resource files (pylupdate4, pyrcc4, pyuic4), so anyone can create a 
plugin without having to mess with installing a separate Qt and compiling PyQt, 
both of which are already in the Qgis app.

-
William Kyngesburye 
http://www.kyngchaos.com/

Earth: "Mostly harmless"

- revised entry in the HitchHiker's Guide to the Galaxy


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[Qgis-user] Couldn't import 'matplotlib'

[Kurt Springs]

Hi,

I am getting the following error message when I open qgis.  I am currently 
running Qgis 1.5 for Mac OS X.

"Couldn't import Python module 'matplotlib' for plotting.  Without it you won't 
be able to run statist."  

I am just clicking Okay and getting on with my work.

statist is present but not checked in the plugins manager.  I was wondering if 
there were a way to get the matplotlib imported so I would no longer get the 
message and some day use the plugins that require it.

As always, any help is appreciated.

Kurt Springs
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Re: [Qgis-user] QGIS 1.5 packages available for Debian Squeeze

[Niccolo Rigacci]

On Sat, Aug 07, 2010 at 04:45:41PM +0200, Niccolo Rigacci wrote:
> 
> deb http://debian.gfoss.it/ lenny main

Errata corrige!!! The repository is squeeze, not lenny:

deb http://debian.gfoss.it/ squeeze main


A tip: Please remove all the Qgis and Grass you have installed 
from the Gfoss repository, before doing the update.

-- 
Niccolo Rigacci
Firenze - Italy
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[Qgis-user] QGIS 1.5 packages available for Debian Squeeze

[Niccolo Rigacci]

Finally I packaged QGIS 1.5 for Debian Squeeze too, architectures 
are i386 and amd64.

The **unofficial** apt-gettable repository is:

deb http://debian.gfoss.it/ lenny main

Please report any problem with the packaging to me, not to the
innocent official Debian mantainers.

Due Squeeze frozen status, the packages should remain installable 
for a long time.

-- 
Niccolo Rigacci
Firenze - Italy
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Re: [Qgis-user] convert the area from 1 sq degrees to hectare

[Micha Silver]

On 08/07/2010 11:31 AM, herman palaquium wrote:

glad to see you again

as you know that my places at N-E of the year ( please type buol 
indonesia on the google maps) I STAY THERE


i remember that you give me the answer before, but CAN YOU GIVE 
FORMULA HOW TO CONVERT 1 SQ DEG. TO .. HECTARE ..?
You can *not* just convert degrees to hectares in a Lon/Lat projection. 
The rough figures I sent last time were just an inaccurate estimate.  
Afterall, as you move north or south towards the poles, the width of 1 
degree changes in size.
What you should do is re-project your data to some projected coordinate 
reference system. Then units will then most likely be in meters, and you 
can calculate areas very simply. I see [1] that Indonesia uses a set of 
Transverse Mercator projections. You might chose the one relevant to 
your area.


In QGIS:
* you can project a shapefile to another CRS by using the "Save As" 
option, and select whatever export CRS you want.

* Rasters can be re-projected using the Raster Tools plugin, gdalwarp tool.

[1]  http://www.spatialreference.org/ref/?search=indonesia

--
Micha



PLEASE STEP BY STEP FORMULA YOU TYPE IT, FOR I KNOW THE WAY OF FORMULA 
FUNCTION


I HOPE GREATEST THAT KNOW FOR MY STUDY

SALAM HORMAT
HERMAN DARI INDONESIA

On 27 Jun 10, at 0:47, Nicklas Avén wrote:


Hallo

hmm, is this right Micha. Isn't the size of a sqare degree depending 
on how far from equator it is. Since the vertical longitudes are 
convergating to the poles 1 west-east degree is 0 at the pole and 
about 4/360 km at the equator which makes the conversion difficult.


/Nicklas
- Ursprungsmeddelande -
> On 06/26/2010 03:40 PM, herman palaquium wrote:
> >
> > AREA: 2.7e-05
> > KebunPoly: KebunAmran1
> > Luas: 0
> > PERIMETER: 0.024863
> > Panjang: 0
> >
> > please help the area and perimeter unit
> >
> The numbers above indicate area: 0.27 square units.
> If, by mistake, you projection units is degrees, instead of meters, 
then
> this would be 0.27 square degrees. One sq deg ~= 110 km X 110 
km, or

> about 12,000 sq km. So the above would translate to approximately
> 327,000 sq meters. Does that make more sense?
>
> Again, if your units are degrees, not meters, then the perimeter would
> be around 2,730,000 meters. (110 km/deg X 0.2483 )
>
>
> > my projection is meter
> >
> > where is the correct 2,4863 meter
> >
> > or 24,863 meter
> >
> > or 248,63 meter
> >
> > or 2486,3 meter
> >
> > or 24863 meter
> >
> > or any answer the correct
> >
> > and than
> >
> > where is the correct area answer ?
> > 0,27 ha
> > 2,7 ha
> > 27 ha
> > 270 ha
> > or any answer the correc
> >
> >
> > herman
> > indonesia
> > ___
> > Qgis-user mailing list
> > Qgis-user@lists.osgeo.org 
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
> > This mail was received via Mail-SeCure System.
> >
> >
>
>
> --
> Micha Silver
> Arava Development Co. +972-52-3665918
> http://www.surfaces.co.il
>
>
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> http://lists.osgeo.org/mailman/listinfo/qgis-user
>





This mail was received via Mail-SeCure System.


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This mail was received via Mail-SeCure System.


   



--
Micha Silver
Arava Development Co. +972-52-3665918
http://surfaces.co.il


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Re: [Qgis-user] Delete column in Attribute Table

[Borys Jurgiel]

Dnia sobota 07 sierpnia 2010 o 10:52:51 Akhilesh Gan napisał(a):
> All,
>We have the Delete column feature in QGIS 1.4(Avilable in Attribute
> table and also Attribute properties)In Edit mode this button is
> not enabled. *How* *to* *delete* *column* *in* QGIS 1.4?

The button is only enabled if used data provider supports removing attributes. 
For most formats it's not supported. For Shapefiles please use Table Manager 
plugin or any spreadsheet supporting dbf files, for Postgis one of Postgis 
plugins.

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Re: [Qgis-user] Delete column in Attribute Table

[Horst Düster]

Am 07.08.2010 10:52, schrieb Akhilesh Gan:

All,
   We have the Delete column feature in QGIS 1.4(Avilable in Attribute 
table and also Attribute properties) In Edit mode this button is not 
enabled. *How* *to* *delete* *column* *in* QGIS 1.4?


Thanks



Regard

 Akhilesh


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Which kind of data source do you use? When you use PostGIS you can drop 
your column from your PG-Table. When you use file based data sources 
take the table manager plugin.


Horst
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[Qgis-user] Delete column in Attribute Table

[Akhilesh Gan]

All,
   We have the Delete column feature in QGIS 1.4(Avilable in Attribute table
and also Attribute properties)In Edit mode this button is not
enabled. *How* *to* *delete* *column* *in* QGIS 1.4?

Thanks



Regard

 Akhilesh
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[Qgis-user] convert the area from 1 sq degrees to hectare

[herman palaquium]

glad to see you again

as you know that my places at N-E of the year ( please type buol  
indonesia on the google maps) I STAY THERE


i remember that you give me the answer before, but CAN YOU GIVE  
FORMULA HOW TO CONVERT 1 SQ DEG. TO .. HECTARE ..?


PLEASE STEP BY STEP FORMULA YOU TYPE IT, FOR I KNOW THE WAY OF FORMULA  
FUNCTION


I HOPE GREATEST THAT KNOW FOR MY STUDY

SALAM HORMAT
HERMAN DARI INDONESIA

On 27 Jun 10, at 0:47, Nicklas Avén wrote:


Hallo

hmm, is this right Micha. Isn't the size of a sqare degree depending  
on how far from equator it is. Since the vertical longitudes are  
convergating to the poles 1 west-east degree is 0 at the pole and  
about 4/360 km at the equator which makes the conversion  
difficult.


/Nicklas
- Ursprungsmeddelande -
> On 06/26/2010 03:40 PM, herman palaquium wrote:
> >
> > AREA: 2.7e-05
> > KebunPoly: KebunAmran1
> > Luas: 0
> > PERIMETER: 0.024863
> > Panjang: 0
> >
> > please help the area and perimeter unit
> >
> The numbers above indicate area: 0.27 square units.
> If, by mistake, you projection units is degrees, instead of  
meters, then
> this would be 0.27 square degrees. One sq deg ~= 110 km X 110  
km, or

> about 12,000 sq km. So the above would translate to approximately
> 327,000 sq meters. Does that make more sense?
>
> Again, if your units are degrees, not meters, then the perimeter  
would

> be around 2,730,000 meters. (110 km/deg X 0.2483 )
>
>
> > my projection is meter
> >
> > where is the correct 2,4863 meter
> >
> > or 24,863 meter
> >
> > or 248,63 meter
> >
> > or 2486,3 meter
> >
> > or 24863 meter
> >
> > or any answer the correct
> >
> > and than
> >
> > where is the correct area answer ?
> > 0,27 ha
> > 2,7 ha
> > 27 ha
> > 270 ha
> > or any answer the correc
> >
> >
> > herman
> > indonesia
> > ___
> > Qgis-user mailing list
> > Qgis-user@lists.osgeo.org
> > http://lists.osgeo.org/mailman/listinfo/qgis-user
> >
> > This mail was received via Mail-SeCure System.
> >
> >
>
>
> --
> Micha Silver
> Arava Development Co. +972-52-3665918
> http://www.surfaces.co.il
>
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/qgis-user
>




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