[Qgis-user] crs

[Boaz Bar Ilan]

hi

I have a dxf file ( converted from dwg ) . its coodinates are in the old
grid.

how can I match it to the new grid ?

whaen I change it in the project property it doesn't work

thanks

boaz
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Re: [Qgis-user] BAD field type for CSV Layer when using csvt

[Ramon Andinach]

Hi Steve,

Are you able to add some data to the bug report that isn’t working? 
A bit of the csv file and the csvt would do.

(I just failed to replicate it, although I’m sure I’ve seen it in the last 
month or so…)


Ramon.

> On 10 Feb 2017, at 04:34, steve.tout...@inspq.qc.ca wrote:
> 
> Bug already reported, I should have looked before 
> https://hub.qgis.org/issues/15816  
> 
> I updated the issue 
> 
> 
> 
> De :steve.tout...@inspq.qc.ca 
> A :qgis-user@lists.osgeo.org 
> Date :2017-02-09 12:23 
> Objet :[Qgis-user] BAD field type for CSV Layer when using csvt 
> Envoyé par :"Qgis-user"  
> 
> 
> 
> I'm creating a layer from a CSV file. I have created .csvt file. 
> From the Create a Layer from a Delimited text file I see that the field 
> rls_est is a string and the leading zero is there. 
> But when I click Ok, the layer is created and rls_est field type is integer 
> instead of String, so I lose the leading 0. 
> See 2 images attached 
> 
> Bug? 
> 
> I prefer not using add vector layer because some numeric fields become 
> String. 
> Steve 
> 
> 
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[Qgis-user] How to save a virtual layer (from a filtered join) with geography from original layer?

[László Sándor]

Hi,

I am using QGIS 2.18.2 on a Mac and new to QGIS (or much of GIS), but I
would like to get a specific task done and I am not sure if I ran into a
fundamental limitation of QGIS.

As I tried to describe on gis.stackexchange.com, I would like to produce
shape files for US census block groups (CBGs) but separately for each (or
the few largest) commuting zone (CZ).
http://gis.stackexchange.com/q/227420/28426

CBG shape files are available state by state, but the commuting zone is not
an attribute in the Census files.

Yet if I join a layer of a shape file with another layer with CZ
identifiers, I can only filter the result to get a virtual layer, which
does not export the geographies if exported/saved. See a separate question
specifically on that:
http://gis.stackexchange.com/q/227277/28426

I am aware of some limitations of the QGIS architecture that might cause
this.
https://hub.qgis.org/issues/8141

However, maybe there is a common workaround which I haven't found. Or
anything else you can think of but I could not.

Thanks for any help,

Laszlo
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Re: [Qgis-user] crs

[Richard McDonnell]

Hi Boaz,
First thing I would say is to save it as a shapefile in its native CRS. 
Also you dont mention a EPSG Code, are you using a defined or custom CRS?
If you are using a defined CRS with a EPSG, you can use on the fly 
transformations, having the project set to the "New Grid" and your 
shapefile in its native or "Old grid". This can be done by right 
clicking on the EPSG: code on the bottom right of QGIS, and ticking 
*Enable 'on the fly' transformations
*The other option would be to use reproject shapefile, to translate the  
CRS from the old to the new. you can find this by typing reproject into 
the Processing Toolbox Search, its one of the QGIS geoalgorithims.

Regards,

Richard.*

*
On 10/02/2017 12:27, Boaz Bar Ilan wrote:

hi

I have a dxf file ( converted from dwg ) . its coodinates are in the 
old grid.


how can I match it to the new grid ?

whaen I change it in the project property it doesn't work

thanks

boaz


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TEL: 01 6476543

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Re: [Qgis-user] Is there any way to constrain the resources QGis uses?

[Richard McDonnell]

Ian,
You could try to limit the max amount of ram available for each VM, this 
would have been done when each, was created, you should probably start 
there!
Its under Settings, System, Motherboard and Base Memory, I would say 
reduce it so as each VM has equal Memory and you leave a bit for the host.


Regards,

Richard.

On 09/02/2017 14:26, Neumann, Andreas wrote:


Hi Ian,

You can limit the nr of CPU cores it uses for rendering:

Settings --> Options --> Rendering --> Render layers in parallel / Max 
cores


I don't think you can limit memory consumption with QGIS settings.

Andreas

On 2017-02-09 14:31, Ian Turton wrote:

I know that sounds like something you wouldn't want to do but we have 
a number of users sharing a VM and if the first QGis started manages 
to grab all (or even most) of the available memory it prevents the 
other users from being able to start QGis let alone use it.

Cheers
Ian
--
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--
*_Richard McDonnell_*
*GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management*
*52 Stephens Green, Dublin 2.*
TEL: 01 6476543

OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
OPW - Looking to the future - Caring for the past

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Re: [Qgis-user] Is there any way to constrain the resources QGis uses?

[Ian Turton]

We have several users on the same VM which is what causes the contention
for memory

Ian

On 10 February 2017 at 13:44, Richard McDonnell 
wrote:

> Ian,
> You could try to limit the max amount of ram available for each VM, this
> would have been done when each, was created, you should probably start
> there!
> Its under Settings, System, Motherboard and Base Memory, I would say
> reduce it so as each VM has equal Memory and you leave a bit for the host.
>
> Regards,
>
> Richard.
>
>
> On 09/02/2017 14:26, Neumann, Andreas wrote:
>
> Hi Ian,
>
> You can limit the nr of CPU cores it uses for rendering:
>
> Settings --> Options --> Rendering --> Render layers in parallel / Max
> cores
>
> I don't think you can limit memory consumption with QGIS settings.
>
> Andreas
>
> On 2017-02-09 14:31, Ian Turton wrote:
>
> I know that sounds like something you wouldn't want to do but we have a
> number of users sharing a VM and if the first QGis started manages to grab
> all (or even most) of the available memory it prevents the other users from
> being able to start QGis let alone use it.
>
> Cheers
>
> Ian
>
> --
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>
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> TEL: 01 6476543
>
> 
>
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Re: [Qgis-user] crs

[Nicolas Cadieux]

Hi,

I see that Richard has responded correctly.  I will just add that dxf files do 
not really have a CRS.  You just need to know it!  Usually, the coordinates are 
in meters or feet and correspond to a local CRS (ex UTM zone 18N).  You may 
have to do some trial and error in order to find the original CRS.  When you 
find that, saving it as a shape file as Richard mentioned, and then specifying 
the crs, is a good way to go.

Good luck
Nicolas

> Le 10 févr. 2017 à 07:27, Boaz Bar Ilan [via OSGeo.org] 
>  a écrit :
> 
> hi
> 
> I have a dxf file ( converted from dwg ) . its coodinates are in the old grid.
> 
> how can I match it to the new grid ?
> 
> whaen I change it in the project property it doesn't work
> 
> thanks
> 
> boaz
> 
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Re: [Qgis-user] Is there any way to constrain the resources QGis uses?

[Nicolas Cadieux]

Hi,

Qgis works well with 4GB of memory on windows 7-64 for simple projects.  If 
possible, I would have more that one VM that would be configured with each 4GB 
of ram and limit 1 user at a time per VM.  If your server can handle the load, 
that would be the best way to go it think.

Nicolas

> Le 10 févr. 2017 à 09:04, Ian Turton [via OSGeo.org] 
>  a écrit :
> 
> We have several users on the same VM which is what causes the contention for 
> memory
> 
> Ian
> 
>> On 10 February 2017 at 13:44, Richard McDonnell <[hidden email]> wrote:
>> Ian,
>> You could try to limit the max amount of ram available for each VM, this 
>> would have been done when each, was created, you should probably start there!
>> Its under Settings, System, Motherboard and Base Memory, I would say reduce 
>> it so as each VM has equal Memory and you leave a bit for the host.
>> 
>> Regards,
>> 
>> Richard.
>> 
>> 
>>> On 09/02/2017 14:26, Neumann, Andreas wrote:
>>> Hi Ian,
>>> 
>>> You can limit the nr of CPU cores it uses for rendering:
>>> 
>>> Settings --> Options --> Rendering --> Render layers in parallel / Max cores
>>> 
>>> I don't think you can limit memory consumption with QGIS settings.
>>> 
>>> Andreas
>>> 
 On 2017-02-09 14:31, Ian Turton wrote:
 
 I know that sounds like something you wouldn't want to do but we have a 
 number of users sharing a VM and if the first QGis started manages to grab 
 all (or even most) of the available memory it prevents the other users 
 from being able to start QGis let alone use it.
  
 Cheers
  
 Ian
  
 -- 
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>>> 
>>>  
>>> 
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>> GIS Specialist PgD GIS AssocSCSI
>> OPW FRM Data Management
>> 52 Stephens Green, Dublin 2.
>> TEL: 01 6476543
>> 
>> 
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Re: [Qgis-user] BAD field type for CSV Layer when using csvt

[Steve . Toutant]

I uploaded a csv and a csvt on the bug report
https://hub.qgis.org/issues/15816

Thanks!



De :Ramon Andinach 
A : steve.tout...@inspq.qc.ca
Cc :qgis-user@lists.osgeo.org
Date :  2017-02-10 08:01
Objet : Re: [Qgis-user] BAD field type for CSV Layer when using csvt



Hi Steve,

Are you able to add some data to the bug report that isn’t working? 
A bit of the csv file and the csvt would do.

(I just failed to replicate it, although I’m sure I’ve seen it in the last 
month or so…)


Ramon.

On 10 Feb 2017, at 04:34, steve.tout...@inspq.qc.ca wrote:

Bug already reported, I should have looked before 
https://hub.qgis.org/issues/15816 

I updated the issue 



De :steve.tout...@inspq.qc.ca 
A :qgis-user@lists.osgeo.org 
Date :2017-02-09 12:23 
Objet :[Qgis-user] BAD field type for CSV Layer when using csvt 
Envoyé par :"Qgis-user"  



I'm creating a layer from a CSV file. I have created .csvt file. 
From the Create a Layer from a Delimited text file I see that the field 
rls_est is a string and the leading zero is there. 
But when I click Ok, the layer is created and rls_est field type is 
integer instead of String, so I lose the leading 0. 
See 2 images attached 

Bug? 

I prefer not using add vector layer because some numeric fields become 
String. 
Steve 


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Re: [Qgis-user] crs

[Richard McDonnell]

Hey,
By defined, im looking to see are you using a recognised Coordinate 
reference System (CRS).
For Example you mention Israeli TM, which has a EPSG code of 2093, does 
your old Grid have a recognised CRS 4141 perhaps???
Without knowing what CRS of your DXF has its very hard to do either of 
my examples.

Sorry I cant be of more help!
Regards,

Richard.

On 10/02/2017 14:37, Boaz Bar Ilan wrote:

hi

thanks
I don't know what your mean  - defined csr code - I switch to Israel / 
Israeli TM
and I  also   enable on to fly option. so I couldn't understand your 
first advice


I tried your second advice ( by typing reproject). when I do run  I 
get  :


Algorithm Reproject layer starting...


unknown See log for more details


thanks


boaz


2017-02-10 15:36 GMT+02:00 Richard McDonnell >:


Hi Boaz,
First thing I would say is to save it as a shapefile in its native
CRS. Also you dont mention a EPSG Code, are you using a defined or
custom CRS?
If you are using a defined CRS with a EPSG, you can use on the fly
transformations, having the project set to the "New Grid" and your
shapefile in its native or "Old grid". This can be done by right
clicking on the EPSG: code on the bottom right of QGIS, and
ticking *Enable 'on the fly' transformations
*The other option would be to use reproject shapefile, to
translate the  CRS from the old to the new. you can find this by
typing reproject into the Processing Toolbox Search, its one of
the QGIS geoalgorithims.
Regards,

Richard.
*

*
On 10/02/2017 12:27, Boaz Bar Ilan wrote:

hi

I have a dxf file ( converted from dwg ) . its coodinates are in
the old grid.

how can I match it to the new grid ?

whaen I change it in the project property it doesn't work

thanks

boaz


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-- *_Richard McDonnell_* *GIS Specialist PgD GIS AssocSCSI* *OPW
FRM Data Management* *52 Stephens Green, Dublin 2.* TEL: 01 6476543


-- *_Richard McDonnell_* *GIS Specialist PgD GIS AssocSCSI* *OPW FRM 
Data Management* *52 Stephens Green, Dublin 2.* TEL: 01 6476543


OPW - Ag féachaint don am atá le teacht - Ag caomhnú ón am atá thart
OPW - Looking to the future - Caring for the past

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Re: [Qgis-user] crs

[Richard McDonnell]

Boaz,
Assuming that's the correct CRS,

1. Save the DXF as a Shapefile and specify 4326.
2. Using Reproject Layer, select the newly created shapefile and
   specify the 2039 ( I had it wrong in my previous email) in the
   *Target CRS* field, by right clicking on the button to the right of
   the field and typing 2039 into the search field, and select Israeli TM
3. Under the Reprojected field either leave alone (results in a tempory
   File) or pick save to file by right clicking on the little button to
   the right of the field

The translated file should be loaded into your desktop.
Hope this helps,

Richard.


On 10/02/2017 15:24, Boaz Bar Ilan wrote:

the dxf comes ( when I  add it) with  crs  epsg 4326

I'm trying to change it to EPSG code of 2093

am I now more clear ? I hope so

thanks

boaz

2017-02-10 17:17 GMT+02:00 Richard McDonnell >:


Hey,
By defined, im looking to see are you using a recognised
Coordinate reference System (CRS).
For Example you mention Israeli TM, which has a EPSG code of 2093,
does your old Grid have a recognised CRS 4141 perhaps???
Without knowing what CRS of your DXF has its very hard to do
either of my examples.
Sorry I cant be of more help!
Regards,

Richard.


On 10/02/2017 14:37, Boaz Bar Ilan wrote:

hi

thanks
I don't know what your mean  - defined csr code - I switch to
Israel / Israeli TM
and I  also   enable on to fly option. so I couldn't understand
your first advice

I tried your second advice ( by typing reproject). when I do run 
I get  :


Algorithm Reproject layer starting...


unknown See log for more details


thanks


boaz


2017-02-10 15:36 GMT+02:00 Richard McDonnell
mailto:richard.mcdonn...@opw.ie>>:

Hi Boaz,
First thing I would say is to save it as a shapefile in its
native CRS. Also you dont mention a EPSG Code, are you using
a defined or custom CRS?
If you are using a defined CRS with a EPSG, you can use on
the fly transformations, having the project set to the "New
Grid" and your shapefile in its native or "Old grid". This
can be done by right clicking on the EPSG: code on the bottom
right of QGIS, and ticking *Enable 'on the fly' transformations
*The other option would be to use reproject shapefile, to
translate the  CRS from the old to the new. you can find this
by typing reproject into the Processing Toolbox Search, its
one of the QGIS geoalgorithims.
Regards,

Richard.
*

*
On 10/02/2017 12:27, Boaz Bar Ilan wrote:

hi

I have a dxf file ( converted from dwg ) . its coodinates
are in the old grid.

how can I match it to the new grid ?

whaen I change it in the project property it doesn't work

thanks

boaz


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-- *_Richard McDonnell_* *GIS Specialist PgD GIS AssocSCSI*
*OPW FRM Data Management* *52 Stephens Green, Dublin 2.* TEL:
01 6476543



-- *_Richard McDonnell_* *GIS Specialist PgD GIS AssocSCSI* *OPW
FRM Data Management* *52 Stephens Green, Dublin 2.* TEL: 01 6476543


-- *_Richard McDonnell_* *GIS Specialist PgD GIS AssocSCSI* *OPW FRM 
Data Management* *52 Stephens Green, Dublin 2.* TEL: 01 6476543


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