Re: FW: [Qgis-user] problems with layers from one source
Hi, > > I can see that the Chicago Ward Boundaries layer is in WGS84 it is not in WGS84, it is in "NAD83 / Illinois East (ftUS)" and was *reprojected* over a WGS84 layer, or a Google Mercator one, etc. Beside the layers from the openlayers plugin -that are not reprojectable- you can do also the other way around --> wgs84 (or whatever else) to "NAD83 / Illinois East (ftUS)" (or whaterver else). You control this by a) giving all layers their *own* CRS b) setting the CRS for the project c) enabling OTFR everything will be reprojected in the *project* CRS > but I'm not able to make it work with this layer from the Census. Can > you tell me how to reconcile these? I know this is basic stuff, but > I've only used ArcView before and I'm new to QGIS. Thank you! I have downloaded the "Primary and Secondary Roads" layer of Illinois. The layer is in the "EPSG:4269 - NAD83" CRS, a geographic one (the wards layer is in a projected CRS). In the attached image you see that everything matches perfectly: the project is in "NAD83 / Illinois East (ftUS)" OTFR is enabled this way both the "EPSG:4269 - NAD83" layer and the WGS84 layer are reprojected in the "NAD83 / Illinois East (ftUS)" CRS. http://ubuntuone.com/5UQj3Yi7S8QhhECwsM7dxf try also open this project http://ubuntuone.com/0Yv3yPV3kL5tXdfLsy0NS9 cheers -- Giovanni -- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
This is a link to some of the other data I'm using - if you select Illinois and download. http://www.census.gov/cgi-bin/geo/shapefiles2010/layers.cgi I can see that the Chicago Ward Boundaries layer is in WGS84 but I'm not able to make it work with this layer from the Census. Can you tell me how to reconcile these? I know this is basic stuff, but I've only used ArcView before and I'm new to QGIS. Thank you! Caroline On Mon, Dec 19, 2011 at 9:59 AM, Giovanni Manghi wrote: > On Mon, 2011-12-19 at 09:36 -0600, Caroline Rendon wrote: > > > http://data.cityofchicago.org/Facilities-Geographic-Boundaries/Boundaries-Wards/bhcv-wqkf > > > > This is a link to download the data. I have used other files from the > > City of Chicago and they're all giving me this same problem. > > > This is just one layer, appears to be in the > > http://prj2epsg.org/epsg/3435 > > CRS and it is aligning perfectly with other layers, like WMS/WGS84 (try > http://geoposer.com:443/server/services/ve.xml) or Google layers (from > the Openlayers plugin). > > http://ubuntuone.com/6piKYdAGJH3dg1okM2TyNz > > http://ubuntuone.com/77rNIGiHvJX7ecFTV3PqIX > > > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
On Mon, 2011-12-19 at 09:36 -0600, Caroline Rendon wrote: > http://data.cityofchicago.org/Facilities-Geographic-Boundaries/Boundaries-Wards/bhcv-wqkf > > This is a link to download the data. I have used other files from the > City of Chicago and they're all giving me this same problem. This is just one layer, appears to be in the http://prj2epsg.org/epsg/3435 CRS and it is aligning perfectly with other layers, like WMS/WGS84 (try http://geoposer.com:443/server/services/ve.xml) or Google layers (from the Openlayers plugin). http://ubuntuone.com/6piKYdAGJH3dg1okM2TyNz http://ubuntuone.com/77rNIGiHvJX7ecFTV3PqIX ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
http://data.cityofchicago.org/Facilities-Geographic-Boundaries/Boundaries-Wards/bhcv-wqkf This is a link to download the data. I have used other files from the City of Chicago and they're all giving me this same problem. On Mon, Dec 19, 2011 at 9:31 AM, Giovanni Manghi wrote: > > > > > Any other ideas? Thanks so much for the help! > > > make available/link a sample of your data that doesn't align. > > > cheers > > -- Giovanni -- > > > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
> > Any other ideas? Thanks so much for the help! make available/link a sample of your data that doesn't align. cheers -- Giovanni -- ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
Okay, per all of your suggestions I have tried these things: - Manually setting the CRS for each layer in properties --> general - I tried projecting all layers with on the fly transformation enabled AND disabled - I reprojected all layers after adding them - I tried saving as for layers that weren't matching up (the ones in the millions) and setting the CRS for the saved as layer. - I made sure the settings were for decimal degrees and not meters or feet - I refreshed the page after every addition - My document is set to "prompt for CRS" rather than use project CRS or use default CRS I am still having the same problem after trying all these things. In the properties menu, everything looks like it's in the same CRS and I've tried two different CRSs, but the layers still do not show up correctly on the map. The layers are all vector layers for Chicago, USA and I've been using WGS 83 and NAD 83 for the CRS. Any other ideas? Thanks so much for the help! Caroline On Sun, Dec 18, 2011 at 5:31 AM, Alister Hood wrote: > Two things to keep in mind: > > - When the option "Settings>Options>CRS>Coordinate reference system for > new layers" is set to "Use project CRS" or "Use default CRS...", any layers > you add which don't come with CRS information will _look in QGIS_ like they > have the same CRS... except that they won't all show up in the same place > on the map. > > - In at least some recent versions of QGIS (and perhaps depending on the > render caching setting or something), when you change the CRS of a layer > the map is not automatically refreshed. You need to do something to force > it to be refreshed - zoom or pan slightly, or add a layer or something. > (And of course the layers will stay in the same location if you do not > have 'on the fly' reprojection enabled in the project properties... which > is different from enabling it by default for new projects). > > Alister > > > > Date: Sat, 17 Dec 2011 12:53:48 -0600 > > From: Caroline Rendon > > Subject: Re: FW: [Qgis-user] problems with layers from one source > > To: Gerardo Jimenez > > Cc: qgis-user@lists.osgeo.org > > Message-ID: > >> h...@mail.gmail.com> > > Content-Type: text/plain; charset="iso-8859-1" > > > > Okay, I'll take another look. I thought I'd adjusted the CRS for all > > layers > > but I must be missing something. Thanks for your help! > > > > Caroline > > > > On Sat, Dec 17, 2011 at 11:31 AM, Gerardo Jimenez > > wrote: > > > > > > > > > > > Gerardo Jiménez Delgado > > > Instituto de Investigaciones Antropológicas > > > Universidad Nacional Autónoma de México > > > Ciudad Universitaria s/n > > > Coyoacan 04510 Mexico City > > > Mexico 56 22 95 16 > > > > > > -- > > > From: gej...@hotmail.com > > > To: caroline.t.ren...@gmail.com > > > Subject: RE: [Qgis-user] problems with layers from one source > > > Date: Sat, 17 Dec 2011 12:30:49 -0500 > > > > > > > > > I am sorry to differ. They can not be in the same CRS. > > > ... > ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
Two things to keep in mind: - When the option "Settings>Options>CRS>Coordinate reference system for new layers" is set to "Use project CRS" or "Use default CRS...", any layers you add which don't come with CRS information will _look in QGIS_ like they have the same CRS... except that they won't all show up in the same place on the map. - In at least some recent versions of QGIS (and perhaps depending on the render caching setting or something), when you change the CRS of a layer the map is not automatically refreshed. You need to do something to force it to be refreshed - zoom or pan slightly, or add a layer or something. (And of course the layers will stay in the same location if you do not have 'on the fly' reprojection enabled in the project properties... which is different from enabling it by default for new projects). Alister > Date: Sat, 17 Dec 2011 12:53:48 -0600 > From: Caroline Rendon > Subject: Re: FW: [Qgis-user] problems with layers from one source > To: Gerardo Jimenez > Cc: qgis-user@lists.osgeo.org > Message-ID: >h...@mail.gmail.com> > Content-Type: text/plain; charset="iso-8859-1" > > Okay, I'll take another look. I thought I'd adjusted the CRS for all > layers > but I must be missing something. Thanks for your help! > > Caroline > > On Sat, Dec 17, 2011 at 11:31 AM, Gerardo Jimenez > wrote: > > > > > > > Gerardo Jiménez Delgado > > Instituto de Investigaciones Antropológicas > > Universidad Nacional Autónoma de México > > Ciudad Universitaria s/n > > Coyoacan 04510 Mexico City > > Mexico 56 22 95 16 > > > > -- > > From: gej...@hotmail.com > > To: caroline.t.ren...@gmail.com > > Subject: RE: [Qgis-user] problems with layers from one source > > Date: Sat, 17 Dec 2011 12:30:49 -0500 > > > > > > I am sorry to differ. They can not be in the same CRS. > > ... ___ Qgis-user mailing list Qgis-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/qgis-user
Re: FW: [Qgis-user] problems with layers from one source
Okay, I'll take another look. I thought I'd adjusted the CRS for all layers
but I must be missing something. Thanks for your help!
Caroline
On Sat, Dec 17, 2011 at 11:31 AM, Gerardo Jimenez wrote:
>
>
> Gerardo Jiménez Delgado
> Instituto de Investigaciones Antropológicas
> Universidad Nacional Autónoma de México
> Ciudad Universitaria s/n
> Coyoacan 04510 Mexico City
> Mexico 56 22 95 16
>
> --
> From: gej...@hotmail.com
> To: caroline.t.ren...@gmail.com
> Subject: RE: [Qgis-user] problems with layers from one source
> Date: Sat, 17 Dec 2011 12:30:49 -0500
>
>
> I am sorry to differ. They can not be in the same CRS. A latitutude
> longitude CRS has valus for longitud +- 180 and for latitude +- 90 Degrees.
> A crs such as a UTM (for instance) could have values in the 10,000 to less
> than a million for the east, and northings could have values from 0 to
> almost 10,000,000. Then, your data could not share crs. If you change the
> crs in propertied/general/specify crs that aill not make any difference and
> could make the problems worst since, for instance, if your data is in the
> west hemisphere and you load data from a utm layer as a latitude longitue
> crs , any GIS (not only qgis)all will be displace the layers, since utm do
> not handle negative values. In order that data could be in the same crs you
> have to reproject your data. Reprojecting converts from one crs to another
> totally different (from espherical coordinates to metric ones). For vector
> layers in qgis 1.7 you have the layer and chose save as, define the file
> format, choose the original crs and the one you want. For raster layers you
> have to go to raster/projections/war(reproject). In order to reproject, I
> insist, you must know the original crs of your data.
>
> Can you let us know where your data is located? also if you know the crs?
> also sometimes it is worth to know which version of Qgis you are using and
> in which OS you are using...
>
> Hope it helps
>
> Gerardo Jiménez Delgado
> Instituto de Investigaciones Antropológicas
> Universidad Nacional Autónoma de México
> Ciudad Universitaria s/n
> Coyoacan 04510 Mexico City
> Mexico 56 22 95 16
>
> --
> Date: Sat, 17 Dec 2011 10:33:17 -0600o select the laye
> Subject: Re: [Qgis-user] problems with layers from one source
> From: caroline.t.ren...@gmail.com
> To: gej...@hotmail.com
> CC: qgis-user@lists.osgeo.org
>
> The CRS is the same for all my layers, this doesn't seem to change
> anything.
>
> On Sat, Dec 17, 2011 at 7:06 AM, Gerardo Jimenez wrote:
>
> The main problem could be that your layers are in different CRS. I assume
> that you want to use lat lon coordinates ("they should be in the range of
> (-87, 41)"). Because you can not have millions of degrees, it is pretty
> sure that the layers that display coordinates in the millions could be a
> CRS that defines its measuring units in meters or feets. For vector layers
> (and assuming a format that can store projection information), select the
> layer , right click, choose properties and go to the general tab. There you
> must be able to see the projection information. For raster layers go to
> rater menu, choose Miscellaneous and select info. Choose your raster and
> you must be able to see the projection information there.
>
> I like to have all my layers in the same CRS, some people also likes to
> use the "on the fly CRS transformation" capability of QGIS . Try in
> Settings, project settings and go to the CRS tab, Choose "enable on the
> fly CRS transformation", then load some layers. One thing is for sure, you
> must know the crs of each of your layers before starting to work with them.
>
> Hope it helps
>
> Gerardo Jiménez Delgado
> Instituto de Investigaciones Antropológicas
> Universidad Nacional Autónoma de México
> Ciudad Universitaria s/n
> Coyoacan 04510 Mexico City
> Mexico 56 22 95 16
>
> --
> Date: Fri, 16 Dec 2011 11:36:07 -0600
> From: caroline.t.ren...@gmail.com
> To: qgis-user@lists.osgeo.org
> Subject: [Qgis-user] problems with layers from one source
>
>
> Hello (again!)
>
> I'm having trouble with all the layers I download from one particular
> source. These layers don't show up in the same place as any others of the
> same area, including those I've geocoded myself. The coordinates shown at
> the bottom of the screen for these are HUGE - they should be in the range
> of (-87, 41) but they're in the millions. I've made sure all layers are in
> the correct CRS and done everything else I can think of. Does anyone have
> any tips or ideas? Thank you!
>
> Caroline
>
> ___ 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
>
>
>
> _
FW: [Qgis-user] problems with layers from one source
Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510
Mexico City
Mexico
56 22 95 16
From: gej...@hotmail.com
To: caroline.t.ren...@gmail.com
Subject: RE: [Qgis-user] problems with layers from one source
Date: Sat, 17 Dec 2011 12:30:49 -0500
I am sorry to differ. They can not be in the same CRS. A latitutude longitude
CRS has valus for longitud +- 180 and for latitude +- 90 Degrees. A crs such as
a UTM (for instance) could have values in the 10,000 to less than a million for
the east, and northings could have values from 0 to almost 10,000,000. Then,
your data could not share crs. If you change the crs in
propertied/general/specify crs that aill not make any difference and could make
the problems worst since, for instance, if your data is in the west hemisphere
and you load data from a utm layer
as a latitude longitue crs , any GIS (not only qgis)all will be displace the
layers, since utm do not handle negative values. In order that data could be in
the same crs you have to reproject your data. Reprojecting converts from one
crs to another totally different (from espherical coordinates to metric ones).
For vector layers in qgis 1.7 you have the layer and chose save as, define the
file format, choose the original crs and the one you want. For raster layers
you have to go to raster/projections/war(reproject). In order to reproject, I
insist, you must know the original crs of your data.
Can you let us know where your data is located? also if you know the crs? also
sometimes it is worth to know which version of Qgis you are using and in which
OS you are using...
Hope it helps
Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510
Mexico City
Mexico
56 22 95 16
Date: Sat, 17 Dec 2011 10:33:17 -0600o select the laye
Subject: Re: [Qgis-user] problems with layers from one source
From: caroline.t.ren...@gmail.com
To: gej...@hotmail.com
CC: qgis-user@lists.osgeo.org
The CRS is the same for all my layers, this doesn't seem to change anything.
On Sat, Dec 17, 2011 at 7:06 AM, Gerardo Jimenez wrote:
The main problem could be that your layers are in different CRS. I assume that
you want to use lat lon coordinates ("they should be in the range of (-87,
41)"). Because you can not have millions of degrees, it is pretty sure that the
layers that display coordinates in the millions could be a CRS that defines its
measuring units in meters or feets. For vector layers (and assuming a format
that can store projection information), select the layer , right click, choose
properties and go to the general tab. There you must be able to see the
projection information. For raster layers go to rater menu, choose
Miscellaneous and select info. Choose your raster and you must be able to see
the projection information there.
I like to have all my layers in the same CRS, some people also likes to use the
"on the fly CRS transformation" capability of QGIS . Try in Settings, project
settings and go to the CRS tab, Choose "enable on the fly CRS transformation",
then load some layers. One thing is for sure, you must know the crs of each of
your layers before starting to work with them.
Hope it helps
Gerardo Jiménez Delgado
Instituto de Investigaciones Antropológicas
Universidad Nacional Autónoma de México
Ciudad Universitaria s/n
Coyoacan 04510
Mexico City
Mexico
56 22 95 16
Date: Fri, 16 Dec 2011 11:36:07 -0600
From: caroline.t.ren...@gmail.com
To: qgis-user@lists.osgeo.org
Subject: [Qgis-user] problems with layers from one source
Hello (again!)
I'm having trouble with all the layers I download from one particular source.
These layers don't show up in the same place as any others of the same area,
including those I've geocoded myself. The coordinates shown at the bottom of
the screen for these are HUGE - they should be in the range of (-87, 41) but
they're in the millions. I've made sure all layers are in the correct CRS and
done everything else I can think of. Does anyone have any tips or ideas? Thank
you!
Caroline
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