You can use SAGA GIS to short out your problem. On Thu, May 13, 2010 at 1:25 AM, <[email protected]> wrote:
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Re: Creating polygon from points in csv file (nikos ves) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 12 May 2010 12:11:40 -0500 > From: mir <[email protected]> > Subject: [Qgis-user] Creating polygon from points in csv file > To: [email protected] > Message-ID: > <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1 > > Hello all, > > I have a list of points in sequence that define a polygon. This is > taken from a legal document defining a piece of land. So far I have > been able to import this into Qgis as points. How do I import it as a > polygon (or convert the points to a polygon? I have tried to use > GRASS, importing it as an ASCII file, but I guess I never got the > ASCII polygon format down. > > I'm sure there must be an asy way. Help! > > mir > > -- > _________________ > Mir Rodríguez Lombardo > Fundación Almanaque Azul > Calle 4a San Felipe, antigua Santa Familia > Ciudad de Panamá > tel +507 836 6452 > cel 6644 9214 > > > ------------------------------ > > Message: 2 > Date: Wed, 12 May 2010 14:34:42 -0300 > From: Arthur Nanni <[email protected]> > Subject: [Qgis-user] GPS CRS > To: [email protected] > Message-ID: > <[email protected]> > Content-Type: text/plain; charset="iso-8859-1" > > Hi, > > I've problems whem I try download waypoints from Garmin GPS with GPS plugin > in the same CRS of the Garmin setup. > > The Garmin was WGS84 - UTM > In the QGIS canvas the downloaded points appears in Lat/Long decimal > degree. > > How I get this points in the original CRS of Garmin? > > Like an alternative I try change the CRS in the layer (Lat/Long DD) with > ftools option, but with no success. > > Some idea? > > Thanks in advance. > > -- > Arthur > Chegou Ubuntu Linux 10.04. Experimente a liberdade! Conheça em > http://www.ubuntu-br.org > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: > http://lists.osgeo.org/pipermail/qgis-user/attachments/20100512/3885b9f3/attachment-0001.html > > ------------------------------ > > Message: 3 > Date: Wed, 12 May 2010 10:43:24 -0700 > From: Alex Mandel <[email protected]> > Subject: Re: [Qgis-user] GPS CRS > To: Arthur Nanni <[email protected]> > Cc: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1 > > Arthur Nanni wrote: > > Hi, > > > > I've problems whem I try download waypoints from Garmin GPS with GPS > plugin > > in the same CRS of the Garmin setup. > > > > The Garmin was WGS84 - UTM > > In the QGIS canvas the downloaded points appears in Lat/Long decimal > degree. > > > > How I get this points in the original CRS of Garmin? > > > > Like an alternative I try change the CRS in the layer (Lat/Long DD) with > > ftools option, but with no success. > > > > Some idea? > > > > Thanks in advance. > > > > > The original CRS of the Garmin is WGS 84 Lat/Long. The fact that you saw > UTM on the screen is an on the fly conversion on the GPS. Most Garmins > for many years have only stored Lat/Long in it's actual data. > > You will need to download the data and reproject(in ftools) it to the > UTM zone you are working in. > > Alex > > > > ------------------------------ > > Message: 4 > Date: Wed, 12 May 2010 20:49:43 +0300 > From: nikos ves <[email protected]> > Subject: Re: [Qgis-user] Creating polygon from points in csv file > To: mir <[email protected]> > Cc: [email protected] > Message-ID: <1273686583.16209.4.ca...@nikos-desktop> > Content-Type: text/plain; charset="UTF-8" > > On Wed, 2010-05-12 at 12:11 -0500, mir wrote: > > Hello all, > > > > I have a list of points in sequence that define a polygon. This is > > taken from a legal document defining a piece of land. So far I have > > been able to import this into Qgis as points. How do I import it as a > > polygon (or convert the points to a polygon? I have tried to use > > GRASS, importing it as an ASCII file, but I guess I never got the > > ASCII polygon format down. > > > > I'm sure there must be an asy way. Help! > > > > mir > > > > You can use the "Points2One" plugin which makes the task you need. > As input takes a point layer and as output gives a polygon or a > polyline. In your case you can choose polygon. > > Be careful with the order of the points, otherwise you might get funny > results. > > eg |1 2| is fine , but > |4 3| > > |1 2| will intersect with itself, making two triangles! > |3 4| > > > Ves Nikos > > > > ------------------------------ > > Message: 5 > Date: Wed, 12 May 2010 13:51:29 -0400 > From: M S <[email protected]> > Subject: Re: [Qgis-user] Creating polygon from points in csv file > To: mir <[email protected]> > Cc: [email protected] > Message-ID: > <[email protected]> > Content-Type: text/plain; charset=ISO-8859-1 > > I guess the practically of this suggestion depends on how many points. > How about digitizing and snapping the new polygon to the points? > > Mark > > On Wed, May 12, 2010 at 1:11 PM, mir <[email protected]> wrote: > > Hello all, > > > > I have a list of points in sequence that define a polygon. This is > > taken from a legal document defining a piece of land. So far I have > > been able to import this into Qgis as points. How do I import it as a > > polygon (or convert the points to a polygon? I have tried to use > > GRASS, importing it as an ASCII file, but I guess I never got the > > ASCII polygon format down. > > > > I'm sure there must be an asy way. Help! > > > > mir > > > > -- > > _________________ > > Mir Rodríguez Lombardo > > Fundación Almanaque Azul > > Calle 4a San Felipe, antigua Santa Familia > > Ciudad de Panamá > > tel +507 836 6452 > > cel 6644 9214 > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > ------------------------------ > > Message: 6 > Date: Wed, 12 May 2010 21:02:54 +0300 > From: nikos ves <[email protected]> > Subject: Re: [Qgis-user] Creating polygon from points in csv file > To: [email protected] > Message-ID: <1273687374.16209.13.ca...@nikos-desktop> > Content-Type: text/plain; charset="UTF-8" > > On Wed, 2010-05-12 at 13:51 -0400, M S wrote: > > I guess the practically of this suggestion depends on how many points. > > How about digitizing and snapping the new polygon to the points? > > > > Mark > > > This would also work, but the why bother, since already has the points > in a csv file? > > One problem I see, is multiple polygones merged in One big messy > polygone due to hte fact that it cant "understand" where a polygon ends > and the next one starts. If that case arise a little editing comes > handy. > > The whole point as I see it is to minimize doing double work > > > Ofcouse if the plugin is inadequate for the job, the next option is to > shape the polygons from, as Mark said, the points mir already has > utilizing the snap feature > > > > > On Wed, May 12, 2010 at 1:11 PM, mir <[email protected]> wrote: > > > Hello all, > > > > > > I have a list of points in sequence that define a polygon. This is > > > taken from a legal document defining a piece of land. So far I have > > > been able to import this into Qgis as points. How do I import it as a > > > polygon (or convert the points to a polygon? I have tried to use > > > GRASS, importing it as an ASCII file, but I guess I never got the > > > ASCII polygon format down. > > > > > > I'm sure there must be an asy way. Help! > > > > > > mir > > > > > > -- > > > _________________ > > > Mir RodrÃguez Lombardo > > > Fundación Almanaque Azul > > > Calle 4a San Felipe, antigua Santa Familia > > > Ciudad de Panamá > > > tel +507 836 6452 > > > cel 6644 9214 > > > _______________________________________________ > > > Qgis-user mailing list > > > [email protected] > > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > ------------------------------ > > Message: 7 > Date: Wed, 12 May 2010 13:44:31 -0500 > From: Gerald Creager <[email protected]> > Subject: Re: [Qgis-user] Creating polygon from points in csv file > To: nikos ves <[email protected]> > Cc: [email protected] > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Nikos, will Points2One work for lines, as well, or just for polygons? I > have a similar issue: I need to create polylines from a CSV file... I, > too, can digitize the points into lines, but, why? > > Thanks Gerry > > nikos ves wrote: > > On Wed, 2010-05-12 at 13:51 -0400, M S wrote: > >> I guess the practically of this suggestion depends on how many points. > >> How about digitizing and snapping the new polygon to the points? > >> > >> Mark > >> > > This would also work, but the why bother, since already has the points > > in a csv file? > > > > One problem I see, is multiple polygones merged in One big messy > > polygone due to hte fact that it cant "understand" where a polygon ends > > and the next one starts. If that case arise a little editing comes > > handy. > > > > The whole point as I see it is to minimize doing double work > > > > > > Ofcouse if the plugin is inadequate for the job, the next option is to > > shape the polygons from, as Mark said, the points mir already has > > utilizing the snap feature > > > > > > > >> On Wed, May 12, 2010 at 1:11 PM, mir <[email protected]> wrote: > >>> Hello all, > >>> > >>> I have a list of points in sequence that define a polygon. This is > >>> taken from a legal document defining a piece of land. So far I have > >>> been able to import this into Qgis as points. How do I import it as a > >>> polygon (or convert the points to a polygon? I have tried to use > >>> GRASS, importing it as an ASCII file, but I guess I never got the > >>> ASCII polygon format down. > >>> > >>> I'm sure there must be an asy way. Help! > >>> > >>> mir > >>> > >>> -- > >>> _________________ > >>> Mir RodrÃguez Lombardo > >>> Fundación Almanaque Azul > >>> Calle 4a San Felipe, antigua Santa Familia > >>> Ciudad de Panamá > >>> tel +507 836 6452 > >>> cel 6644 9214 > >>> _______________________________________________ > >>> Qgis-user mailing list > >>> [email protected] > >>> http://lists.osgeo.org/mailman/listinfo/qgis-user > >>> > >> _______________________________________________ > >> Qgis-user mailing list > >> [email protected] > >> http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > _______________________________________________ > > Qgis-user mailing list > > [email protected] > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > -- > Gerry Creager -- [email protected] > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > > > ------------------------------ > > Message: 8 > Date: Wed, 12 May 2010 22:55:27 +0300 > From: nikos ves <[email protected]> > Subject: Re: [Qgis-user] Creating polygon from points in csv file > To: [email protected] > Cc: [email protected] > Message-ID: <1273694127.19243.29.ca...@nikos-desktop> > Content-Type: text/plain; charset="UTF-8" > > On Wed, 2010-05-12 at 13:44 -0500, Gerald Creager wrote: > > Nikos, will Points2One work for lines, as well, or just for polygons? I > > have a similar issue: I need to create polylines from a CSV file... I, > > too, can digitize the points into lines, but, why? > > > > Thanks Gerry > > > > Just test it, It successfully made a line across all the points, except > for the inconvenience that is making just ONE line. > > Unfortunately, as I've found, QGIS lacks vertex-level editing (delete > multiple vertices in line/polygon; move multiple vertices) at least in > v1.1 which seems to be the case in 1.5. > > > > > > nikos ves wrote: > > > On Wed, 2010-05-12 at 13:51 -0400, M S wrote: > > >> I guess the practically of this suggestion depends on how many points. > > >> How about digitizing and snapping the new polygon to the points? > > >> > > >> Mark > > >> > > > This would also work, but the why bother, since already has the points > > > in a csv file? > > > > > > One problem I see, is multiple polygones merged in One big messy > > > polygone due to hte fact that it cant "understand" where a polygon ends > > > and the next one starts. If that case arise a little editing comes > > > handy. > > > > > > The whole point as I see it is to minimize doing double work > > > > > > > > > Ofcouse if the plugin is inadequate for the job, the next option is to > > > shape the polygons from, as Mark said, the points mir already has > > > utilizing the snap feature > > > > > > > > > > > >> On Wed, May 12, 2010 at 1:11 PM, mir <[email protected]> wrote: > > >>> Hello all, > > >>> > > >>> I have a list of points in sequence that define a polygon. This is > > >>> taken from a legal document defining a piece of land. So far I have > > >>> been able to import this into Qgis as points. How do I import it as > a > > >>> polygon (or convert the points to a polygon? I have tried to use > > >>> GRASS, importing it as an ASCII file, but I guess I never got the > > >>> ASCII polygon format down. > > >>> > > >>> I'm sure there must be an asy way. Help! > > >>> > > >>> mir > > >>> > > >>> -- > > >>> _________________ > > >>> Mir RodrÃguez Lombardo > > >>> Fundación Almanaque Azul > > >>> Calle 4a San Felipe, antigua Santa Familia > > >>> Ciudad de Panamá > > >>> tel +507 836 6452 > > >>> cel 6644 9214 > > >>> _______________________________________________ > > >>> Qgis-user mailing list > > >>> [email protected] > > >>> http://lists.osgeo.org/mailman/listinfo/qgis-user > > >>> > > >> _______________________________________________ > > >> Qgis-user mailing list > > >> [email protected] > > >> http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > > > > _______________________________________________ > > > Qgis-user mailing list > > > [email protected] > > > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > > > > > ------------------------------ > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user > > > End of Qgis-user Digest, Vol 51, Issue 19 > ***************************************** > -- L.Iyappan M.Tech Remote Sensing CEO & Founder of Magendhiran Consultancy Services 5,3rd Street, Gandhi Nagar, Kanchipuram, Near Chennai, Tamil Nadu, India Mobile: +91-9047134181 Mail: [email protected] web: www.mcsmapping.com
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