I am not sure what you mean, Paulo. But there is already the Feature Id
(Object Id in ArcGIS) in QgsFeature. Do you mean having that a mandatory
field that gets populated every time a feature is created within a
shapefile?
I think it is a good idea to have the id field automated in QGIS. But it is
I am using QGIS 2.2 and I have no problem with forms. I am able to edit
attributes with it.
-
Maaza Christos, PhD
www.Axumcorp.com
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It seems that those who know are quiet and no one responded to answer my
earlier query as well. Your guess is as good as mine. I think this is the
end of the semester or spring time etc. One has to just try every
possibility and find out on his own, that is what open-source means. No one
is respons
I am not sure if there is a hole in the spatial index or a slippery slope
leading it to a wrong conclusion. I am having a problem with the Spatial
Index not finding the geometry very close to it and going and finding other
geometry much farther away. It is not very nice!
What do you think may be
I would add that the units be configurable, instead of only one unit. In the
this part of the world, we use imperial units and everyone seems to embrace
the King and Queen Units with no King and Queens in residence.
Oh, I forgot, we have stars and idols to keep us amused.
-
Maaza Christos,
I found a few places where the syntax of the API documentation says something
and the application telling another story.
One of these inconsistencies happens to be the on geometry query to find the
closest vertex,
QgsGeometry.closestVertex (const QgsPoint &point, int &atVertex, int
&beforeVertex,
It was resolved a while ago. It may happen to another person and I want to
leave a note that it must have been a mix up of older libraries causing the
GUI to cause conflicts in QT. I uninstalled the old version of QT and
installed QT 4.7 version. I then reinstalled QGIS and it worked.
-
M
I have an issue that after upgrading my C++ plugins to 2.0.1, they do not
show up in the 2.0 version of QGIS. Has the procedure for identifying and
installing C++ plugins in QGIS 2.0+ changed? I have tried using the start-up
plugins generator and that does not show up also in the 2.0 version.
I h
Anita: I also agree it should be kept as experimental or test case.
I have another question on the PgRouting plugin. I get an error message
while starting QGIS saying that the python version is wrong. Is it written
for Python 2.5 or 2.7?
But I am not a voting member, so do not add my response abo
I have been stuck here with both the releaseand the dev. version of QGIS 2.0
.
Why should it go into debug? Below is the error message I get,
Debug Error on the Program : C:\path\qgis-bin.exe
Module: 4.7.1
File global\qglobal.cpp
Line:2262
QPixmap: Must construct a QApplication befor
I \have been struggling for a week with a fresh installation of QGIS 2.0.1
(Dufour) and the development version. I get a Debug Error on the Program :
C:\path\qgis-bin.exe
Module: 4.7.1
File global\qglobal.cpp
Line:2262
QPixmap: Must construct a QApplication before a QPaintDevice
(Press retry
How about QgsGeometry->fromWkt ( WKBNoGeometry )
-
Maaza Christos, PhD
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I think you need to use a reference instead of a pointer as the argument.
-
Maaza Christos, PhD
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Open the project file and look for the list of layers. I think the order is
based on how it is stored in the project file. Something must be happening
while saving the project.
-
Maaza Christos, PhD
www.Axumcorp.com
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I am getting this error message with my C++ plugins and am wondering why? Can
anyone help solve this puzzle? Is there any documentation that tells what
has changed as far as plugins written in C++ for QGIS 2.0 to install them?
It seems to me that there may be a procedure that it is lookign for in t
Hi, Roberto:
I think the query from layer.getFeatures() returns an iterator and that
means you use the nextFeature(feat) to get the next feature until it fails
to return a feature, then it means you have reached the end of the iterator
list.
iter = layer.getFeatures()
while iter.nextFeature(feat)
I think I have a problem that may be an issue of an older version of windows
(XP) issue. Any idea why I am getting an error while compiling main (QGIS)
on missing CaptureStackBackTrace ?
I learned that it is available only after Windows Vista. Is there a
workaround? I am compiling 2.0.1.
-
Thank you Matthias for your help. I had correctly declared the location of
the bison executable yet there is something strange on my machine that is
causing it to not recognized the path variable.
I specified it before compiling by inserting the path to the bison
executable in the VC directories
I got this error message while compiling QGIS 2.0.1 from Master
1>Generating qgsexpressionparser.cpp
1>C:\GnuWin32\bin\bison.exe: m4: No such file or directory
1>Project : error PRJ0019: A tool returned an error code from "Generating
qgsexpressionparser.cpp"
1>Build log was saved at
"file://c:\QG
Yes.
-
Maaza Christos, PhD
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I am using VS Express 2008 but I think the issue is very similar to any
version. If you compile look at the compile error messages, it must not be
able to compile the QGIS_Core library file. It is the glue that holds all
the important base tools. Some dependency may have been missing for the
compil
I was using Python Spatial Index and select from a vector layer using the
result from nearest neighbor (list) and get error messages saying it does
not recognized the list. I see in the API the input to the select
QList< QgsFeatureId > QgsSpatialIndex::nearestNeighbor ( QgsPoint point,
int
Thank you for the answer Daniel!
I still do not understand what I must do to have the plugin detected. Is
that folder the one I have to create? There does not appear a folder with
QGIS 2 in any of the existing folder structure created 1.8 and 1.9. I have
not tried 2.0.
-
Maaza Christos, P
I just found out through a simple search. Ignore my request.
Thank you,
-
Maaza Christos, PhD
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Where can one find the changes to the API for the current development version
(1.9) and the 1.8.
I am trying to update past version plugins.
Thank you,
Maaza
-
Maaza Christos, PhD
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I need help on how I update the spatialite version in my QGIS install from
2.4 to 3.0.
I have posted below the version difference between what I download from QGIS
1.8 Master and the official OSGeo release
Local version
QGIS version 1.8.0-Lisboa
QGIS code revision c64bb9d
Compiled against Qt 4.7.
I would liek saving expressions in file and a directory of my own choosing
would be ideal. At least that is what ArcGIS had (As far as version 9.3,
that I have used in the past.)
I would ask for simplicity and ease of use. Why make the project file
bloated and prone to corruption by adding field c
I was able to get the Oracle plugin to compile without errors. The geometry
library files were missing from the OSGeo download. I also added the path to
the headers that were missing (geometry headers) to the project.
Still QGIS 1.8 and 1.9 is not recognizing my plugin, while the locally build
ver
Dear Shiva:
I use windows and I followed the build instructions found in the link
http://hub.qgis.org/wiki/quantum-gis/Development should help you. If you can
not follow it, at least you must give some indication of where you
experience a problem by posting errors that you get during your compilati
I updated my 1.7.x plugins, to work with 1.8.x. I can use the plugins within
the source compiled and installed version (C++ install) that I have locally
but not the official OSGEO windows release. All the plugins show up on the
locally compiled version of QGIS. But on the OSGEO version only those
w
I updated my 1.7.x plugins, to work with 1.8.x. I can use the plugins within
the source compiled and installed version (C++ install) that I have locally
but not the official OSGEO windows release. All the plugins show up on the
locally compiled version of QGIS. But on the OSGEO version only those
w
Forget my request. I went ahead with a native SQLite query (after including
the sqlite3 header) here is what I used to get to the data,
sqlite3 *db;
int rc = sqlite3_open( spliteDBName.toStdString().c_str(), &db);
if( rc ){
txtStream<< "Can't open database:
Martin, I also have a question about querying using SQL. How can I query
selected records using SQL syntax?
Thank you,
Maaza
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Dear Martin:
I tried every way I can think of and I have not been able to use the
non-geometric table .
Here is the code I am using let me know if you think I am doing something
wrong,
QString spliteDBName = "C:/db/sjs.db";
QString tblName = "tztrips";
QString dbProv = "s
I have made a few changes here and I do not get a valid layer in the first
place.
QgsDataSourceURI splUri;
splUri.setDatabase(spliteDBName); // i give the database name as a
fully qualified path QString
splUri.setDataSource("","Trips", ""); // I set the schema and the
geo
Thanks Martin for the info. Now how what are the parameters for the
If I have a table named Trips and I want to add data to the three columns
i,j,v it contains.
I set the datasource as like this? But I get error message when I try to
query the fields from the provider.
QgsDataSource uri
I need help to create tables (both geometric and geometryless) in my C++
plugin. I have a very big data set and it has been difficult to use either
flat file (for the geometryless data) or shapefile (for the geometric data)
and I do not want to use PostGIS since I will pass the data to a colleagu
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