Re: [Qgis-user] Geopackage decimal lenght and precision not available
On Wed, 26 Feb 2020 09:27:18 -0500, Patrick St-Hilaire
wrote:
> I solved the problem with this function
>
> round("ELEV",2)
Beware of the floating points, be it single, double, quad, or any
other precision. This solution you used may produce results (e.g.)
only when printing this or converting to a character sequence of some
sort.
Depending on the truncated value it can be impossible to represent as
an "exact" number due to mantissa normalization afterwards, giving you a
"periodic tithes" (is this the name in English?), where a decimal
(binary in this case) pattern is repeated ad infinitum.
Any math operation after this can imply in extra rounding errors.
Floating point is a kind of untameable beast. ;)
>
> Le mar. 25 févr. 2020 à 14:55, Bernd Vogelgesang
> a écrit :
>
> > As far as I know sqlite-based formats do not need such settings. I
> > think the need to do so in Shape files derives from those ancient
> > times when each byte of memory was so expensive, that you had to
> > squeeze your data to the lowest footprint possible.
> > Am 25.02.20 um 20:23 schrieb Patrick St-Hilaire:
> >
> > Hi,
> >
> > I started using geopackage instead of shapefile, but I can't use
> > length and precision decimal with geopackage. Is this normal? See
> > image screenshot
> >
> > It's in french language
> >
> > I use the 3.4.5 Qgis version.
> >
> >
> >
> > ___
> > Qgis-user mailing listqgis-u...@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
> >
> > ___
> > Qgis-user mailing list
> > Qgis-user@lists.osgeo.org
> > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Roxo
--
Non luctari, ludare ---+ WYSIWYG
Fernando M. Roxo da Motta | Editor?
Except where explicitly stated I speak on my own behalf.| VI !!
PU5RXO | I see text,
Quis custodiet ipsos custodes?-+ I get text!
___
Qgis-user mailing list
Qgis-user@lists.osgeo.org
List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Am 28.02.20 um 20:48 schrieb J. M: Hi Andre, Okay thanks once again... I'll have a go, though I'm not sure how to remove them. Would it be 'sudo apt-get remove gdal-bin' or does it need 'sudo apt-get remove gdal-bin 3.0.2+dfsg-1~bionic2'? The first one should be ok. I ask because I don't know if gdal-bin is something generic used elsewhere and I have to denominate that. As I don't really understand what those files are, I'm wary of removing them without being sure of the syntax first. Can I be sure they aren't needed for another program, for example Blender? You can install gdal-bin later from the main Ubuntu repo, which will be version 2.2.3. Blender should be happy with it. I doubt they support GDAL 3 yet. So once those four files are removed I can try sudo apt-get install libgdal20=2.2.3+dfsg-2 again? And once I have libgdal20 installed then I can run sudo apt-get install qgis qgis-plugin-grass python3-qgis? If I'm missing anything else then please let me know.. Run the apt-cache policy libgdal20 again. If it offers you version 2.2.3 only, then QGIS sould install properly. HTH, Andre Joost ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Hi Jimi, On Fri, 28. Feb 2020 at 18:29:26 +0100, J. M wrote: > I'm still not clear about what the ubuntugis PPA is needed for, or what > gdal even is.. GDAL is what is being used to access raster and vector files. ubuntugis provides more uptodate packages including GDAL and PRØJ. So to use those we normally have also qgis builds based on ubuntugis in https://qgis.org/ubuntugis next to those for the plain ubuntu release in https://qgis.org/ubuntu. The former also requires adding the ubuntugis unstable repository. Currently we can work with GDAL2 from plain ubuntu and although we could work with GDAL3, we cannot use GDAL 3 from ubuntugis, because we also require PRØJ 6.3.1 and ubuntugis only provides 6.2.1. So there are no current builds for ubuntugis and therefore for bionic you should remove all the packages you installed from https://qgis.org/ubuntugis or the ubuntugis repo and install from https://qgis.org/ubuntu instead. Jürgen -- Jürgen E. Fischer norBIT GmbH Tel. +49-4931-918175-31 Dipl.-Inf. (FH) Rheinstraße 13 Fax. +49-4931-918175-50 Software Engineer D-26506 Nordenhttps://www.norbit.de QGIS release manager (PSC) GermanyIRC: jef on FreeNode signature.asc Description: PGP signature norBIT Gesellschaft fuer Unternehmensberatung und Informationssysteme mbH Rheinstrasse 13, 26506 Norden GF: Juergen Fischer, Nils Kutscher HR: Amtsgericht Aurich HRB 100827 Datenschutzerklaerung: https://www.norbit.de/83/ ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Hi Andre, Okay thanks once again... I'll have a go, though I'm not sure how to remove them. Would it be 'sudo apt-get remove gdal-bin' or does it need 'sudo apt-get remove gdal-bin 3.0.2+dfsg-1~bionic2'? I ask because I don't know if gdal-bin is something generic used elsewhere and I have to denominate that. As I don't really understand what those files are, I'm wary of removing them without being sure of the syntax first. Can I be sure they aren't needed for another program, for example Blender? So once those four files are removed I can try sudo apt-get install libgdal20=2.2.3+dfsg-2 again? And once I have libgdal20 installed then I can run sudo apt-get install qgis qgis-plugin-grass python3-qgis? If I'm missing anything else then please let me know.. Cheers, Jimi. On Fri, Feb 28, 2020 at 7:27 PM Andre Joost wrote: > Am 28.02.20 um 18:29 schrieb J. M: > > > Here's what I get: > > sudo apt-get remove libgdal20 > > [sudo] password for jimi: > > Reading package lists... Done > > Building dependency tree > > Reading state information... Done > > Package 'libgdal20' is not installed, so not removed > > That was expected, because apt-cache policy libgdal20 already told you > that it was not installed. > > > jimi@jimi-System-Product-Name:~$ dpkg -l | grep gdal > > ii gdal-bin 3.0.2+dfsg-1~bionic2 > > amd64Geospatial Data Abstraction Library - > > Utility programs > > ii gdal-data 3.0.2+dfsg-1~bionic2 > > all Geospatial Data Abstraction Library - > Data > > files > > ii libgdal26 3.0.2+dfsg-1~bionic2 > > amd64Geospatial Data Abstraction Library > > ii python3-gdal 3.0.2+dfsg-1~bionic2 > > amd64Python 3 bindings to the Geospatial > Data > > > These are still GDAL 3.02 packages that you installed with the ubuntugis > PPA. Get rid of those, otherwise you will not get further. > > > > > I'm still not clear about what the ubuntugis PPA is needed for, or what > > gdal even is.. > > GDAL is more or less the heartbeat of QGIS. Almost every operation uses > it. For some reason, you must use exactly the same GDAL version as the > QGIS package is compiled against. For bionic (without ubuntugis), this > is GDAL 2.2.3. The gdal-abi package is used to confirm that version. > > With the Ubuntugis PPA, you have installed a newer version of GDAL > (3.0.2), and the packet manager does not downgrade it by itself (it does > not know about th specific QGIS requirements). > > > HTH, > Andre Joost > > ___ > Qgis-user mailing list > Qgis-user@lists.osgeo.org > List info: https://lists.osgeo.org/mailman/listinfo/qgis-user > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Am 28.02.20 um 18:29 schrieb J. M: Here's what I get: sudo apt-get remove libgdal20 [sudo] password for jimi: Reading package lists... Done Building dependency tree Reading state information... Done Package 'libgdal20' is not installed, so not removed That was expected, because apt-cache policy libgdal20 already told you that it was not installed. jimi@jimi-System-Product-Name:~$ dpkg -l | grep gdal ii gdal-bin 3.0.2+dfsg-1~bionic2 amd64Geospatial Data Abstraction Library - Utility programs ii gdal-data 3.0.2+dfsg-1~bionic2 all Geospatial Data Abstraction Library - Data files ii libgdal26 3.0.2+dfsg-1~bionic2 amd64Geospatial Data Abstraction Library ii python3-gdal 3.0.2+dfsg-1~bionic2 amd64Python 3 bindings to the Geospatial Data These are still GDAL 3.02 packages that you installed with the ubuntugis PPA. Get rid of those, otherwise you will not get further. I'm still not clear about what the ubuntugis PPA is needed for, or what gdal even is.. GDAL is more or less the heartbeat of QGIS. Almost every operation uses it. For some reason, you must use exactly the same GDAL version as the QGIS package is compiled against. For bionic (without ubuntugis), this is GDAL 2.2.3. The gdal-abi package is used to confirm that version. With the Ubuntugis PPA, you have installed a newer version of GDAL (3.0.2), and the packet manager does not downgrade it by itself (it does not know about th specific QGIS requirements). HTH, Andre Joost ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Hi Ismail! Thanks for your help; your instructions were very clear. I had another go and it still doesn't work! Haha, I'll end up calling NASA or something.. Here's what I get: sudo apt-get remove libgdal20 [sudo] password for jimi: Reading package lists... Done Building dependency tree Reading state information... Done Package 'libgdal20' is not installed, so not removed 0 to upgrade, 0 to newly install, 0 to remove and 57 not to upgrade. jimi@jimi-System-Product-Name:~$ dpkg -l | grep gdal ii gdal-bin 3.0.2+dfsg-1~bionic2 amd64Geospatial Data Abstraction Library - Utility programs ii gdal-data 3.0.2+dfsg-1~bionic2 all Geospatial Data Abstraction Library - Data files ii libgdal26 3.0.2+dfsg-1~bionic2 amd64Geospatial Data Abstraction Library ii python3-gdal 3.0.2+dfsg-1~bionic2 amd64Python 3 bindings to the Geospatial Data Abstraction Library The package I was trying to install was actually libgdal20, following Andre's last suggestion: sudo apt-get install libgdal20=2.2.3+dfsg-2 I'm still not clear about what the ubuntugis PPA is needed for, or what gdal even is.. It probably seems like I'm emailing with every problem, but each time I do it's after I've spent an hour googling things and trying stuff. I'm really struggling to understand why QGIS is so dispersed, and why I can't isolate everything and purge it for a clean reinstall.. Any further help would be greatly appreciated because I'm completely out of ideas. Cheers, Jimi. On Fri, Feb 28, 2020 at 4:57 PM Ismail Sunni wrote: > Hi Jimi, > > Since I have more or less the same problem, I did like this: > > >1. Set to use the ubuntu repo in your APT: >deb https://qgis.org/ubuntu bionic main >deb-src https://qgis.org/ubuntu bionic main >2. Try to install QGIS or any packages that you need. >3. If you get the `The following packages have unmet dependencies.` >problem, just remove the package. For example in your case `libgdal20` >(sudo apt remove libgdal20). >4. If the package is not found, try to find the package name, for >example by using `dpkg -l | grep gdal`. Remove the packages. >5. Try again to install your package (from step 2), see if the problem >persists. > > In my case, I got this The following packages have unmet dependencies when > I want to install QGIS, then QGIS requirement for building from source. I > got missing saga-common, gdalabi, and libopencv-calib3d3.2. > > I did the steps above, and now it works fine. > > Basically, what I understand is, there is a problem in the package, so > remove it, and the package manager will re-install it while you are > installing QGIS. CMIIW. > > I hope it helps. > > Best regards. > > > On Thu, Feb 27, 2020 at 11:58 PM J. M wrote: > >> Hi there guys, >> >> I think I've done everything that people have suggested, including >> Andre's last suggestion: >> sudo apt-get install libgdal20=2.2.3+dfsg-2, which returned this, similar >> to last time: >> >> sudo apt-get install libgdal20=2.2.3+dfsg-2 >> Reading package lists... Done >> Building dependency tree >> Reading state information... Done >> Some packages could not be installed. This may mean that you have >> requested an impossible situation or if you are using the unstable >> distribution that some required packages have not yet been created >> or been moved out of Incoming. >> The following information may help to resolve the situation: >> >> The following packages have unmet dependencies. >> libgdal20 : Depends: libogdi3.2 (>= 3.2.0) but it is not going to be >> installed >> E: Unable to correct problems, you have held broken packages. >> >> As I can't get beyond that point I have no idea what else to try, to be >> honest. As Ben suggested I edited the etc file to include this: >> deb https://qgis.org/ubuntu-ltr bionic main, because Ubuntu 18.04 LTS >> doesn't yet support QGIS 3.12. If you can install QGIS and run it, then how >> do you simply remove the entire program and all its dependencies so that >> you can start from scratch? If I run purge X on any other program I >> think my system removes it completely, though I'm not sure. >> >> Fernando Moxo suggested the following, but I've already run sudo apt-get >> autoremove qgis (as QGIS wasn't the last program I installed and I don't >> want this process to randomly erase vital dependencies and leave me with >> half an OS) and there are fewer unmet dependencies now than the first time, >> but I don't know what 'installed prereq.' means, or 'Id those prereq'. >> Sorry, I can't act on that line because I don't understand it. >> >> sudo apt autoremove >> >> Should uninstall all dangling installed prereq. Id those prereq are >> being kept due to some other package requiring them, or some remaining >> from
Re: [Qgis-user] QGIS uninstalled after GDAL PPA install
Hi Jimi, Since I have more or less the same problem, I did like this: 1. Set to use the ubuntu repo in your APT: deb https://qgis.org/ubuntu bionic main deb-src https://qgis.org/ubuntu bionic main 2. Try to install QGIS or any packages that you need. 3. If you get the `The following packages have unmet dependencies.` problem, just remove the package. For example in your case `libgdal20` (sudo apt remove libgdal20). 4. If the package is not found, try to find the package name, for example by using `dpkg -l | grep gdal`. Remove the packages. 5. Try again to install your package (from step 2), see if the problem persists. In my case, I got this The following packages have unmet dependencies when I want to install QGIS, then QGIS requirement for building from source. I got missing saga-common, gdalabi, and libopencv-calib3d3.2. I did the steps above, and now it works fine. Basically, what I understand is, there is a problem in the package, so remove it, and the package manager will re-install it while you are installing QGIS. CMIIW. I hope it helps. Best regards. On Thu, Feb 27, 2020 at 11:58 PM J. M wrote: > Hi there guys, > > I think I've done everything that people have suggested, including Andre's > last suggestion: > sudo apt-get install libgdal20=2.2.3+dfsg-2, which returned this, similar > to last time: > > sudo apt-get install libgdal20=2.2.3+dfsg-2 > Reading package lists... Done > Building dependency tree > Reading state information... Done > Some packages could not be installed. This may mean that you have > requested an impossible situation or if you are using the unstable > distribution that some required packages have not yet been created > or been moved out of Incoming. > The following information may help to resolve the situation: > > The following packages have unmet dependencies. > libgdal20 : Depends: libogdi3.2 (>= 3.2.0) but it is not going to be > installed > E: Unable to correct problems, you have held broken packages. > > As I can't get beyond that point I have no idea what else to try, to be > honest. As Ben suggested I edited the etc file to include this: > deb https://qgis.org/ubuntu-ltr bionic main, because Ubuntu 18.04 LTS > doesn't yet support QGIS 3.12. If you can install QGIS and run it, then how > do you simply remove the entire program and all its dependencies so that > you can start from scratch? If I run purge X on any other program I think > my system removes it completely, though I'm not sure. > > Fernando Moxo suggested the following, but I've already run sudo apt-get > autoremove qgis (as QGIS wasn't the last program I installed and I don't > want this process to randomly erase vital dependencies and leave me with > half an OS) and there are fewer unmet dependencies now than the first time, > but I don't know what 'installed prereq.' means, or 'Id those prereq'. > Sorry, I can't act on that line because I don't understand it. > > sudo apt autoremove > > Should uninstall all dangling installed prereq. Id those prereq are > being kept due to some other package requiring them, or some remaining > from previous Qgis install it can take a bit more effort to fix. > > > I don't know how to erase individual dependencies, so without specific > commands I wouldn't know where to start. I ran autoremove and I thought it > took out everything, even dependencies unrelated to QGIS. Out of curiosity, > are the majority of QGIS users software developers as well? I've never > experienced this level of technical difficulty associated with the > installation of a piece of software on Linux before (I've been a dedicated > Ubuntu user since 12.04 LTS). > > Could someone recommend where to start from scratch, and suggest what to > do step-by-step, so I'm not cluttering up the group email with the same > queries for ages? I had it working perfectly (albeit briefly) before I > accidentally installed the ubuntugis-unstable PPA, so I know it's not a > problem with my OS. > Many thanks again, > Jimi. > > > > On Thu, Feb 27, 2020 at 1:10 PM Fernando M. Roxo da Motta > wrote: > >> On Wed, 26 Feb 2020 12:33:24 +0800, Ben Hur Pintor >> wrote: >> >> >> > Hi! >> > >> > It looks like your machine is trying to install 3.12. >> >> This kind of error usually indicates that 3.12 is already >> installed. Prossibly a previous install brought in the 3.12 version as >> a pre-requirement. If that is so, a command like: >> >> $ sudo apt autoremove >> >> Should uninstall all dangling installed prereq. Id those prereq are >> being kept due to some other package requiring them, or some remaining >> from previous Qgis install it can take a bit more effort to fix. >> >> Try to remove directly each of those dependencies. >> >> >> HTH >> >> > >> > As I mentioned in the last part of my previous message, right now you >> > can't install QGIS 3.12 on Ubuntu 18.04 because 3.12 needs PROJ 6.3.1 >> > which currently isn't available in Bionic -- via the main canonical
Re: [QGIS-it-user] Importare Raster con Azione Python
Motivi esterni non mi hanno permesso continuare con questo post. Ma il mio interesse continua, grazie a Barruso e Salvatore per essersi interessati. Appena mi libero, condivido cartelle e le mie prove! Grazie a tutti! -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Italian-User-f5250612.html ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
Re: [Qgis-user] [QGIS-Developer] Zoom to Scale Plugin - Should we include it on qgis.org?
Nyall, What if you added a lock checkbox to the tile scale panel so that if you resize QGIS it wont resize the underlying image, but keep it locked onto the fixed scales of the scale bar? It appears to me that the scale bar is locking it to the scale of the image tiles when you move it. Am I right with that assumption? Thanks, Calvin On Thu, Feb 20, 2020 at 5:48 PM Nyall Dawson wrote: > On Fri, 21 Feb 2020 at 05:37, C Hamilton wrote: > > > > We have written a plugin that fixes the scale of the QGIS canvas to > match the integral size of EPSG:3857 map server tiles. This way there is no > degradation of the images by transformation. This has some similarities to > the QGIS 2 plugin called Tile Map Scale Plugin which was never updated for > QGIS 3. > > How is this different to the built-in "Tile Scale" panel? Can you clarify? > > Nyall > > > > > This only works with EPSG:3857 projections. I wish I could figure out a > way to also match an EPSG:4326 tile cache to the canvas scale size, but I > cannot use the map scale to calculate this because it changes as you move > around. > > > > Would you be interested in having this plugin added into the QGIS repo? > Unlike the Tile Map Scale Plugin ours only has a single toggle button to > lock or unlock the QGIS scale to one of the predefined scales. > > > > Let me know what you think? > > > > Thanks, > > > > Calvin > > ___ > > QGIS-Developer mailing list > > qgis-develo...@lists.osgeo.org > > List info: https://lists.osgeo.org/mailman/listinfo/qgis-developer > > Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-developer > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Stream to feature problem
On 28/02/2020 2:12, ming han wrote: Hi all Is qgis has a function like "stream link" in Arcgis which can convert the stream raster to feature. I tried with raster to vector function in grass and qgis. it has following errors. Using GRASS, the way to do this involves two steps: first you want to "thin" the raster streams using the module "r.thin". This insures that there will not be adjacent pixels. Then, when you convert to stream lines, specify the type as line feature. So here are the commands (if you have a raster stream network called "streams"): r.thin streams output=streams_thin r.to.vect streams_thin output=streams_vector type=line In addition, I should mention that GRASS offers a set of plugins for hydrology: r.stream.*. Among them is the module r.stream.order. Using this plugin you can create a stream vector directly from the flow direction and flow accumulation grids, and you get the stream order and upstream flow accumulation area "for free". HTH Cheers Ming ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user -- Micha Silver Ben Gurion Univ. Sde Boker, Remote Sensing Lab cell: +972-523-665918 https://orcid.org/-0002-1128-1325 ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [QGIS-it-user] [ANTISPAMRT:] Esportare file shp in dxf
Il 27/02/2020 20:32, gius.pippo1...@libero.it ha scritto: Salve sto cercando di esportare degli shp in qgis 3.4 in dxf. Ho provato sia il metodo PROGRAMMA-IMPORTA/ESPORTA-ESPORTA PROGETTO IN DXF-selezione lo shp punti che mi interessa e avvio l'esportazione, quando apro il file dxf in autocad la dimensione dei punti è fissa e sono molto grandi. Ho provato anche il metodo save as direttamente dal tasto destro del shp punti che mi interessa, ma quando lo apro in autocad non compare nulla. Come posso fare per avere il file punti in dxf in maniera da poterci lavorare? Grazie Giuseppe - nel primo caso viene esportato il simbolo ed influisce sulla sua dimensione la "scala simbologia" impostata nella finestra di esportazione. fai dei tentativi riducendo. nel secondo viene esportato il punto senza come entità. fai su acad zoom esteso (z e) per vederli. può darsi che qgis non esporti nel dxf l'extent e acad all'apertura non centra lo zoom sui dati. marco -- Marco Guiducci - 055 4383194 SITA - Sistema informativo territoriale e ambientale Regione Toscana - Via di Novoli 26 - 50127 Firenze ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
[QGIS-it-user] Changelog QGIS 3.12 București
Salve lista, in attesa di quelli ufficiali, ho fatto un bel esercizio di scraping di dati dal web ed ho prodotto i changelog di QGIS 3.12. Forse ne mancherà qualcuno perché è veramente complicato seguirne la logica. qui, un mio blog post dove spiego la tecnica usata (grazie a Andrea Borruso) https://pigrecoinfinito.com/2020/02/25/qgis-e-i-changelog-3-12-scraping-da-repo-github/ qui, un repository con tutte le novità con screenshot e/o gif animate https://github.com/pigreco/changelog312 saluti - https://pigrecoinfinito.wordpress.com/ -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Italian-User-f5250612.html ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
Re: [Qgis-user] Stream to feature problem
Sorry, this message got messed up - trying again... Hi Ming, There is a place where your raster "line" is two pixels wide, and this is also where the "errors" occurs. I guess that the raster "line" needs to be properly thinned (to a one pixel wide skeleton) before running this algorithm. Håvard On 28.02.2020 09:09, Håvard Tveite wrote: > Hi Ming, > > The errors occur where raster "line" is two pixels wide, and > that is also where you find the "errors". > (to a one pixel wide skeleton) before running this algorithm. > > Håvard > > On 28.02.2020 01:13, ming han wrote: >> Hi all >> Is qgis has a function like "stream link" in Arcgis which can >> convert the stream raster to feature. >> I tried with raster to vector function in grass and qgis. it has >> following errors. >> >> Cheers >> Ming >> >> image.png > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [Qgis-user] Stream to feature problem
Hi Ming, The errors occur where raster "line" is two pixels wide, and that is also where you find the "errors". (to a one pixel wide skeleton) before running this algorithm. Håvard On 28.02.2020 01:13, ming han wrote: > Hi all > Is qgis has a function like "stream link" in Arcgis which can > convert the stream raster to feature. > I tried with raster to vector function in grass and qgis. it has > following errors. > > Cheers > Ming > > image.png ___ Qgis-user mailing list Qgis-user@lists.osgeo.org List info: https://lists.osgeo.org/mailman/listinfo/qgis-user Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
Re: [QGIS-it-user] Esportare file shp in dxf
Se in AutoCAD sono entità punti riduci la dimensione lì. Se sono blocchi invece puoi ridurre il blocco. Almeno dal post non si capisce perchè non puoi ridurre le dimensioni in AutoCAD. -- Sent from: http://osgeo-org.1560.x6.nabble.com/QGIS-Italian-User-f5250612.html ___ QGIS-it-user mailing list QGIS-it-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/qgis-it-user
