Re: [Qgis-user] Fix polygon that is not closed?
Yes, and QGIS displays the shapefile with no problem, and I was unable to visually find where is this topological error... But, nevertheless, PostGIS refuses to import it, and geometry validity check says its not closed :-(... I have a couple more polygons that are, supposedly, self intersecting, but could not find those intersections visually. All of the polygons were created using Dxf2SHP plugin. --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia On Fri, Dec 17, 2010 at 5:53 AM, Brad Nesom gisbrado...@live.com wrote: arcmap found no problem with that file usig geometry check. On Thu, Dec 16, 2010 at 2:36 PM, Zoran Jankovic zoran.janko...@zisis.hrwrote: Hi list, I have isolated a polygon that is supposedly not closed (fTools - check validity), and PostGIS refuses to load it because of it. I was playing with node tool, but I do not see a way to detect were this polygon is not closed? It looks perfectly normal to me... (attached). How can I fix this, besides using FME (kind of out of my league, budget-wise :-)). --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re: Fix polygon that is not closed?
On Fri, Dec 17, 2010 at 12:55 PM, Andrea Peri aperi2...@gmail.com wrote: Yes, and QGIS displays the shapefile with no problem, and I was unable to visually find where is this topological error... But, nevertheless, PostGIS refuses to import it, and geometry validity check says its not closed :-(... What version of postgis ? I think the last version of postgis allow to load Unvalid Polygon. (1.5.1+) Surely the actula trunk version (2.0.0) has a ST_MakeValid(..) to correct the self-intersections. Regards, Ah, an eye opening comment indeed :-). I realized I was using SPIT plugin, when I had the more advance shp2pgsql at hand... I am actually using PostGIS 2.0 from SVN, so I was able to import those shp with no problem... ...for now... :-) -- - Andrea Peri . . . . . . . . . qwerty àèìòù - ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: Fwd: [Qgis-user] QGIS Near
Hi Joe, On Wed, Oct 20, 2010 at 5:06 PM, Joe Larson joela...@gmail.com wrote: Does the function 'snapWithContext' http://doc.qgis.org/head/classQgsVectorLayer.html#733b974dce13d587e05cf3d4fc24f208 which Snaps to segment or vertex within given tolerance. seem like what you're looking for? I came across it while trying to get Quantum Navigator working recently...seemed relative, but I'm no expert! This is similar to the mentioned solution with selecting by radius, or changing the tolerance of ID tool. Close, but no cigar. Since this is not very urgent, I've decided to continue pursuing that outlined solution Carson gave, and write a plugin i Python based on that. Since I actually never used Python before, it may take a while, but hey, I get to learn sth. new :-). I never got the word back from Carson, has he developed anything along these lines, but I have to presume he didn't... Anyone interested in joning me, or even earning some money, is still invited to jump on board. My GIS implementation project is well on the way, and it seems there'll even be some money involved :-). Zoran ~joe On Tue, Oct 19, 2010 at 9:55 AM, Andreas Neumann a.neumann at carto.net wrote: Hi Zoran, I believe the infrastructure of what you want is already wihtin the selection and identify tools in QGIS. Isn't this almost implemented in the current identify tool? It sort of is, but not completely. Identify will ID all the features within certain radios (percentage of extent), but it will ID _all_ of the features within this radius. I only need the nearest, no matter how far away... Let us say it is, for simplicity, within current extent. The current identify tool selects near or close by features within a certain tolerance. This tolerance can be set in Options -- Map tools search radius. I believe it currently only effects the identify tool. Do you want the same tolerance also be used for the click-selection tool? Look above. This could be useful, but it is not the functionality I'm currently looking after. Are you also aware that in QGIS 1.6 there are new selection tools? * by click * by rectangle * by polygon * by freehand * by radius Yup, these are great, but they all select _multiple_ features within radius, rectangle, etc. Maybe this also helps to address your needs? Of course you can combine it with previous selections by pressing the ctrl key. BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: Re: Fwd: [Qgis-user] QGIS Near
Hi Stefan, Yes! This is exactly what I was looking for! You were too fast for me, I'm still on my first step: Python for Dummies :-)) As I can see the main stuff is in featurefindertool.py? And it works through all the features in the selected layer every time? But, I really do not have that many features, and it takes 2-3 seconds to find the nearest feature on my, not so very new laptop, in a layer with cca 4200 point features. Best regards, PS Stefan, do you have a PayPal account? Or, does anyone know any better way of transfering (modest, I'm afraid) amount of money? PayPal is limited to paying only in Croatia... --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia On Wed, Oct 20, 2010 at 8:54 PM, Ziegler Stefan stefan.zieg...@bd.so.chwrote: Hi Zoran I had some time left, took all my code snippets and also the one from Carson. Please try the plugin Nearest that should cover your example 1: http://www.catais.org/qgis/plugins.xml regards Stefan -Ursprüngliche Nachricht- *Von:* Zoran Jankovic [mailto:zoran.janko...@zisis.hr] *Gesendet am:* Mittwoch, 20. Oktober 2010 19:21 *An:* qgis-user *Betreff:* Re: Fwd: [Qgis-user] QGIS Near Hi Joe, On Wed, Oct 20, 2010 at 5:06 PM, Joe Larson joela...@gmail.com wrote: Does the function 'snapWithContext' http://doc.qgis.org/head/classQgsVectorLayer.html#733b974dce13d587e05cf3d4fc24f208 which Snaps to segment or vertex within given tolerance. seem like what you're looking for? I came across it while trying to get Quantum Navigator working recently...seemed relative, but I'm no expert! This is similar to the mentioned solution with selecting by radius, or changing the tolerance of ID tool. Close, but no cigar. Since this is not very urgent, I've decided to continue pursuing that outlined solution Carson gave, and write a plugin i Python based on that. Since I actually never used Python before, it may take a while, but hey, I get to learn sth. new :-). I never got the word back from Carson, has he developed anything along these lines, but I have to presume he didn't... Anyone interested in joning me, or even earning some money, is still invited to jump on board. My GIS implementation project is well on the way, and it seems there'll even be some money involved :-). Zoran ~joe On Tue, Oct 19, 2010 at 9:55 AM, Andreas Neumann a.neumann at carto.net wrote: Hi Zoran, I believe the infrastructure of what you want is already wihtin the selection and identify tools in QGIS. Isn't this almost implemented in the current identify tool? It sort of is, but not completely. Identify will ID all the features within certain radios (percentage of extent), but it will ID _all_ of the features within this radius. I only need the nearest, no matter how far away... Let us say it is, for simplicity, within current extent. The current identify tool selects near or close by features within a certain tolerance. This tolerance can be set in Options -- Map tools search radius. I believe it currently only effects the identify tool. Do you want the same tolerance also be used for the click-selection tool? Look above. This could be useful, but it is not the functionality I'm currently looking after. Are you also aware that in QGIS 1.6 there are new selection tools? * by click * by rectangle * by polygon * by freehand * by radius Yup, these are great, but they all select _multiple_ features within radius, rectangle, etc. Maybe this also helps to address your needs? Of course you can combine it with previous selections by pressing the ctrl key. BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Fwd: [Qgis-user] QGIS Near
Sorry, I found out I sent this only to Carson, and not to the list, so I'm forwarding the messagge to the list. Has anyone worked on a Near plugin, or something similar? -- Forwarded message -- From: Zoran Jankovic zoran.janko...@zisis.hr Date: Sun, Oct 17, 2010 at 11:26 PM Subject: Re: [Qgis-user] QGIS Near To: carson.far...@gmail.com Carson, Have you, by any chance, pursued this idea further? I would be very much interested in a plugin that could determine the closest point feature, and select it, from the selected layer, when clicked anywhere on the map. Or, closest to the preselected feature. Example: I have a lot of points that represent hydrants. This layer is selected in the list. I choose this hypothetical Near function from the menu, and click anywhere on the map. The closest hydrant to where I clicked is selected. Example 2: Same as previous, but I do not have to click, I can select an already existing point and than have the nearest hydrant to this point selected. It is crucial that I do not want to create any new layers, define to and from layers, etc. In the case of clicking on the map, there shouldn't be any new point created... I would just need the nearest feature selected. Bonus: if the nearest feature could be a line, polyline or a polygon, not just a point. I'm aware that all of the above is already possible to accomplish in PostGIS, but this way it would be much simpler, and it would work regardless of data source: shp, postgis... as long as it is a vector layer in QGIS... I'm very close to implementing QGIS here in my hometown, and if I manage to actually earn any money from this, I would be more than happy to sponsor the development of such a plugin, for a reasonable price. The problem is I need the functionality now, and the money is yet to be earned :-(. Best regards, Zoran Jankovic www.zisis.hr On Mon, May 31, 2010 at 1:11 PM, Carson Farmer carson.far...@gmail.comwrote: No plugin that I know of, but it could probably be done quite easily from the Python console, something to the tune of (untested!): layer = qgis.utils.iface.mapCanvas().layer(0) provider = layer.dataProvider() provider.select([]) feat = QgsFeature() index = QgsSpatialIndex() while provider.nextFeature(feat): index.insertFeature(feat) provider.select([]) while provider.nextFeature(feat): near = index.nearestNeighbour(feat.geometry().asPoint(),1) nearest = near[0] # now do something here with the two points... and output results as you like # Obviously you'd have a bit more work to do here to compute angles etc. but all this functionality is available via the QGIS API... # If I get a chance, I might try to add this to the fTools/Vector menu... Regards, Carson On 26 May 2010 22:13, whollycow sjgard...@wisc.edu wrote: Is anyone aware of a function equivalent to Near in ArcGIS? (see http://webhelp.esri.com/arcgisdesktop/9.3/index.cfm?TopicName=Near_(Analysis) for reference) I have been searching all day and haven't come across anything quite like it. It seems like such basic functionality I would be surprised if someone hasn't already coded a solution. View this message in context: QGIS Near Sent from the qgis-user mailing list archive at Nabble.com. ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- Carson J. Q. Farmer ISSP Doctoral Fellow National Centre for Geocomputation National University of Ireland, Maynooth, http://www.carsonfarmer.com/ ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: Fwd: [Qgis-user] QGIS Near
On Tue, Oct 19, 2010 at 9:55 AM, Andreas Neumann a.neum...@carto.netwrote: Hi Zoran, I believe the infrastructure of what you want is already wihtin the selection and identify tools in QGIS. Isn't this almost implemented in the current identify tool? It sort of is, but not completely. Identify will ID all the features within certain radios (percentage of extent), but it will ID _all_ of the features within this radius. I only need the nearest, no matter how far away... Let us say it is, for simplicity, within current extent. The current identify tool selects near or close by features within a certain tolerance. This tolerance can be set in Options -- Map tools search radius. I believe it currently only effects the identify tool. Do you want the same tolerance also be used for the click-selection tool? Look above. This could be useful, but it is not the functionality I'm currently looking after. Are you also aware that in QGIS 1.6 there are new selection tools? * by click * by rectangle * by polygon * by freehand * by radius Yup, these are great, but they all select _multiple_ features within radius, rectangle, etc. Maybe this also helps to address your needs? Of course you can combine it with previous selections by pressing the ctrl key. BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Helmert 7 param transformation
Hi guys, Thanks for all the help! I found some really useful apps via the links you all sent. On a side note, I was aware that Helmerts transformation is very well documented, just am little pressed for time right now to develop an Excel sheet on my own (my exam is on Thursday :-) ). Here is what I found (in case someone else will be looking for (free) transformation software: http://www.apsalin.com/online.aspx http://www.apsalin.com/online.aspx http://www.fgg.uni-lj.si/~/mkuhar/Pouk/Utils.html (this one is in Slovenian, but the Excel files are in English themselves, only the file names are in Slovenian). Best regards, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia On Tue, Sep 14, 2010 at 2:28 PM, Gerry Creager gerry.crea...@tamu.eduwrote: I sent this to ZOran directly, but for others who might be interested, this site has a lot of useful geodesy tools: http://www.ngs.noaa.gov/TOOLS/ I've been a happy user for years. gerry Zoran Jankovic wrote: Hi guys and girls, I sent this message once before, but I do not think it got through, so I'm reposting. I know this is slightly off topic, but I ran out of places to ask... I'm looking for a piece of software, it could be a standalone app, or some JavaScript somewhere, that can calculate the 7 parameters of Helmerts transformation from the coordinates of identical points. Lots of applications can transform CRS, even on the fly, but I need something to calculate the parameters... The thing is I'm preparing for an exam, this is like a bar exam so I can get to be a certified surveying engineer, and one of the questions is to calculate the params. A decade ago, when I was a student, I had the formulas in a Sharp programmable calculator (that I borrowed :-)). Alas, both the knowledge, as well as the programmable calculator got lost somewhere over the years :-) -- Gerry Creager -- gerry.crea...@tamu.edu Texas Mesonet -- AATLT, Texas AM University Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Helmert 7 param transformation
On Tue, Sep 14, 2010 at 5:50 PM, Jean-Claude Repetto jc...@mxm.eu wrote: Le 14/09/2010 16:14, Zoran Jankovic a écrit : Here is what I found (in case someone else will be looking for (free) transformation software: http://www.apsalin.com/online.aspx http://www.apsalin.com/online.aspx http://www.fgg.uni-lj.si/~/mkuhar/Pouk/Utils.html (this one is in Slovenian, but the Excel files are in English themselves, only the file names are in Slovenian). Sorry, but it seems that these applications are not related to your question, or did I miss something ? No, you are right, these are not (directly) related to the original question. The one application that _does_ compute 7 parameters is SEVENPAR (Killetsoft), but it's commercial, and demo version rounds off on 1st decimal... :-( Sorry, I've been working on 10 things at once, I sent my previous email before I finished it properly :-(. Br, Zoran ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Helmert 7 param transformation
Hi guys and girls, I sent this message once before, but I do not think it got through, so I'm reposting. I know this is slightly off topic, but I ran out of places to ask... I'm looking for a piece of software, it could be a standalone app, or some JavaScript somewhere, that can calculate the 7 parameters of Helmerts transformation from the coordinates of identical points. Lots of applications can transform CRS, even on the fly, but I need something to calculate the parameters... The thing is I'm preparing for an exam, this is like a bar exam so I can get to be a certified surveying engineer, and one of the questions is to calculate the params. A decade ago, when I was a student, I had the formulas in a Sharp programmable calculator (that I borrowed :-)). Alas, both the knowledge, as well as the programmable calculator got lost somewhere over the years :-) --- Zoran Jankovic ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] OSM
Hi, Have you tried Settings - Project Settings - Enable on the fly CRS transformation? I'm also assuming you have defined CRS for your data? It works for me, I'm using custom projection, similar to EPSG 31266, Windows XP, QGIS 1.4.0... You could try using WGS84 for your project, while still preserving data in EPSG 3763, using the aforementioned 'on the fly' transformation capability. The maximum extent is rather small, I'm using under 0.5 degrees Latitude and Longitude. --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia On Sun, Jun 6, 2010 at 2:35 PM, ALT SHN i.geograf...@alt-shn.org wrote: Hello, I'm having a hard time with OpenStreetMap Plugin - no matter how small the area it always replies Booth Extents Are Too Large. Is it because my project isn't using geographic coordinates? (I'm using cartographic coordinates - ETRS89 tm06 Portugal [EPSG 3763])? If so, does that mean that I can only retrive information if my project is in wgs84? Thaks in advance, Andre -- --- Associação Leonel Trindade SOCIEDADE DE HISTÓRIA NATURAL Apartado 25 2564-909 Torres Vedras Portugal Sede e Biblioteca: rua Cavaleiros da Espora Dourada, 27A 2560 Torres Vedras Laboratório de Paleontologia e Paleoecologia: Polígono Industrial do Alto do Ameal 2565-641 Ramalhal http://alt-shn.blogspot.com www.alt-shn.org ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Mobile GIS
Hi guys, It would be great if you could send me the source code as well. I admit not to be the top coder, but I could help... I have some ideas that are quite compatible with your work... BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia On Wed, Apr 21, 2010 at 8:09 PM, Miguel Montesinos mmontesi...@prodevelop.es wrote: Hi Phillipe, -Mensaje original- De: Philipp Auersperg-Castell [mailto:p...@bluedynamics.com] Enviado el: miércoles, 21 de abril de 2010 17:42 Para: Miguel Montesinos CC: qgis-user Asunto: Re: [Qgis-user] Mobile GIS Hi Miguel, Noli! Miguel, thanks for your hint, I just skimmed your class diagram, looks quite promising. since my stuff is yet experimental, gvSig seems worth a look for sharing components. - Do you have a public SVN repo for getting the source? Yes, but we are working some months on an internal one that we intend to migrate to the public one and keep on working on it as soon as the new version gets released. In the next days we are going to release a new version (0.2). It's in beta phase for some days and with no bugs so far, so it will be quite soon (probably next week). We can send you the binaries or the source code of this version if you want to have a look without waiting for the release. - Does gvsig support selecting and identifying features and querying data such as attributes, area, ? Not really, it can now search for Points of Interest (POIs) in external services, and query them afterwards, but it would be a good idea to work together for adding these kind of features. more questions will follow ;) They will be wellcome Regards, Miguel Montesinos ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] [Offtopic]Geoext search
Hi list, As the subject says, this is offtopic, but I have sent the same messagge to Geoext users mailing list, nobody answered, and it's a very low traffic list... So, if anyone has some experience with Geoext, I would appreciate all the help I can get. (The data is prepared with QGIS, so it's not totally OT :-) ). My setup is very simple one, I have some SHP, loaded into Geoserver as a layer. I was looking into Geoext documentation and found this: http://www.geoext.org/lib/GeoExt/widgets/form/SearchAction.html What version of Ext, Geoext and Openlayers JS I have to reference to get this working? I have tried with the setup from geoext tutorial, and with my own local Ext-2.3.0, Geoext 0.6 and OpenLayers-2.8, to no effect... The first problem I can see, in Ext-2.3.0 API documentation there is no more Ext.form.Panel but there is Ext.form.FormPanel object So, if I use my setup from the basic example (it loads ExtJS 2.3.0, geoext 0.6 and OpenLayers 2.8) I get what is basically a blank page (only what I add as HTML is rendered), Firefox Error Console gives a bunch of warnings and 1 error: Error: Ext.form.Panel is not a constructor Source File: http://localhost/trazenje/ Line: 22 And if I try changing Ext.form.Panel to Ext.form.Formpanel I get: Error: ct is null Source File: http://localhost/ext-2.3.0/ext-all.js Line: 1140 Needles to say my Javascript knowledge is limited, but I was under the (probably false ;-) ) impression that I would at least be able to run some examples :-(. Where is the error? What should be in head to be able to run this example? --- Zoran Jankovic ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Fwd: Import _and_ process DXF?
On Fri, Feb 5, 2010 at 7:06 AM, Mike Toews mwto...@gmail.com wrote: Yes, it creates shapefile with polylines, and even a separate shapefile with text (if you check the Export text labels. But, it does not (can not?) create _polygon_ shapefile, nor there is a way to associate parcel number to the parcel shape... That was the question ;-). As for the new GDAL/OGR: Osgeo4win installer says the highest supported version is 1.5.4-4 (Exp setting). CAD files can be really sloppy. Features don't have attributes, such as labels. (The only exception is block labels associated with points, but I'm not even sure if the FOSS offerings can do this association as I haven't checked). Furthermore, CAD polylines can be either a polygon or linestring, depending whether if it is closed or not. There is a large body of documentation on CAD-to-GIS conversion strategies, using a variety of software to accomplish a similar objective. If you want to get fancy and efficient, you could use a spatial join between the lot polygons and the the text shapefile (point?) locations to update the appropriate field for label .. then review the attributes to make sure it matches the CAD labels. -Mike Yes, the spatial join would be the solution, except that this sample DXF loads only as polylines, not as polygons: the source DXF file is all lines, not polygons... So, I have one more hurdle to overcome, before I get to the spatial join part... BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] Geoprocessing question
OK list, here is one more philosophical GIS question, with more than one answer possible. Task: create one layer with street names, house numbers and city name Set up: - vector layers are all shapefiles - one layer with points, attribute filed is house_number (presumably, someone will input this data point by point, by digitizing or GPS surveying...) - the second layer is street buffer - created from streets, contains street_name field, among others If I perform intersect I get a new layer with point within polygons, that now contain both street_name and house_number among others, _except_ for the houses/points that are on the crossroads, because they intersect with more than one polygon (street buffer). Let's say there are maybe 5%, or less, points that are on the crossroads, so my solution for now is to add them manually later after intersection. Of course, the resulting shapefile contains more fields (columns), that are not needed, but cannot be erased in QGIS, or at least I haven't figured out how... The second approach that crosses my mind is to import all of the shapefiles into PostGIS, but I do not have very much experience with spatial queries per se - is it possible to refine this process in PostGIS? If anyone has any ideas/pointers/suggestions/experience with similar tasks I would be very grateful :-). BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Re: Qgis-user Digest, Vol 48, Issue 9
On Fri, Feb 5, 2010 at 2:28 PM, jamesmikedup...@googlemail.com jamesmikedup...@googlemail.com wrote: On Fri, Feb 5, 2010 at 12:36 PM, qgis-user-requ...@lists.osgeo.org 5. Re: Fwd: Import _and_ process DXF? (Mike Toews) Message: 5 Date: Thu, 4 Feb 2010 22:06:48 -0800 From: Mike Toews mwto...@gmail.com Subject: Re: [Qgis-user] Fwd: Import _and_ process DXF? To: Zoran Jankovic zoran.janko...@zisis.hr Cc: qgis-user@lists.osgeo.org Message-ID: I have a dxf2osm checked in here: http://github.com/h4ck3rm1k3/TwoNickels you can use that to filter and preprocess your dxf files. mike ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user I stumbled upon dxf2osm a couple of weeks ago, but it's a bit of a project all on it's own to get it compiled and do something useful. Not that I have a problem with C++, it was my first programming language of choice, 10 or so years ago, it's just that my programing skills are rusted enough (never developed? :-) ) that it would take me too much time to do something useful ;-). Nevertheless this is still a valid Plan B ;-). Thanks Mike! --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Fwd: Import _and_ process DXF?
On Wed, Feb 3, 2010 at 11:47 AM, Lionel Roubeyrie lroubey...@limair.asso.fr wrote: Hi Zoran, there's a dxf2shp plugin working perfectly on your file. Cordialy Yes, it creates shapefile with polylines, and even a separate shapefile with text (if you check the Export text labels. But, it does not (can not?) create _polygon_ shapefile, nor there is a way to associate parcel number to the parcel shape... That was the question ;-). As for the new GDAL/OGR: Osgeo4win installer says the highest supported version is 1.5.4-4 (Exp setting). Le 03/02/2010 11:34, Zoran Jankovic a écrit : I'm resending, the first one seemed to bounce as too big... -- Forwarded message -- From: Zoran Jankoviczoran.janko...@zisis.hr Date: Wed, Feb 3, 2010 at 9:27 AM Subject: Import _and_ process DXF? To: qgis-userqgis-user@lists.osgeo.org Hi, I have cadastrial data like the sample in the attachment. It's layered DXF, with parcel numbers as block references in the layer 1_kc_broj, and the main layer of cadastrial parcel boundaries is 1_kc_medja. I would like to import this DXF into SHP (or directly to PostGIS?) _with the attribute parcel_number as well. Over the years I have used trial versions of FME, and this can be done, of course, using this - let's say it gently - not so cheap commercial application. Could it be done in QGIS (some plugins I am not aware of)? Best regards, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user -- Lionel Roubeyrie - lroubey...@limair.asso.fr Chargé d'études LIMAIR - la Surveillance de l'Air en Limousin http://www.limair.asso.fr ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
[Qgis-user] PRJ file does not include custom crs?
Hi list, I have two, presumably newbie, questions: - I have created my custom CRS, and I wanted to export it with my shape file, so I could use keep native option in Geoserver SRS handling... But. when I checked the resulting PRJ file it did not contain my specified towgs84 parameters. Specifically, custom CRS in QGIS is: +proj=tmerc +lat_0=0 +lon_0=18 +k=0. +x_0=650 +y_0=0 +ellps=bessel +towgs84=-529.4533,-151.7769,-470.4923,5.319463,2.404593,-11.734044,2.430907 +units=m +no_defs and PRJ file says: PROJCS[Transverse_Mercator,GEOGCS[Bessel 1841,DATUM[D_unknown,SPHEROID[bessel,6377397.155,299.1528128]],PRIMEM[Greenwich,0],UNIT[Degree,0.017453292519943295]],PROJECTION[Transverse_Mercator],PARAMETER[latitude_of_origin,0],PARAMETER[central_meridian,18],PARAMETER[scale_factor,0.],PARAMETER[false_easting,650],PARAMETER[false_northing,0],UNIT[Meter,1]] I have tried to do the same in 1.0.2, 1.4.0 and r12771M (trunk), always the same result... What am I missing? And the second question is slightly offtopic. I am working on a project that needs some basic data display and search functionality, for now it is: QGIS - Geoserver - OpenLayers. For the more advanced fetures like search and feature highlight for now I'm using GeoExt. But it seems a bit overkill... does anyone has any examples, links... to do it with just OpenLayers? BR, --- Zoran Jankovic ZIS-Izrada softvera i savjetovanje / ZIS - Software Development and Consulting http://www.zisis.hr M: 00 385 98 682 902 T: 00 385 44 683 374 A. Senoe 4 44320 Kutina Croatia ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
