Re: [Qgis-user] trouble adding a basemap from a WMTS source

2022-07-06 Thread Kobben, Barend (UT-ITC) via Qgis-user 
Stephen,

Note that if you ask for ant=y service in a CRS that is not the ‘native’ one 
for the service (which for WMTS is usually EPSG:3857, the ‘google’ Mercator), 
it fully depends on how that service is set up if it is able and “willing” to 
provide it in the requested CRS. You can find that out by checking the services 
metadata (eg for WMS and other OGC compatible ones by issueing a 
GetCapabilities request).

--
Barend Köbben


On 06/07/2022, 16:36, "Qgis-user on behalf of Stephen Sacks via Qgis-user" 
mailto:qgis-user-boun...@lists.osgeo.org> on 
behalf of qgis-user@lists.osgeo.org> wrote:

It turns out that my problem is not getting the map from New York's DOITT, but 
in re-projecting it from EPSG:900913 to the project's EPSG:2263.  If I leave it 
in EPSG:900913 it doesn't disappear.  But I worry that some trouble may result 
if my basemap has a different CRS from all the other layers.

=
Original post (7/4/2022, 8:17 PM):
  My project CRS is EPSG:2263;  all 21 layers were created in this project with 
CRS   EPSG:2263  , which seems appropriate for a public park in Brooklyn, NY.  
If I use Google Satellite Hybrid as basemap, everything looks to be in the 
right  place.  I would like to replace the Google basemap with one of many maps 
available from the New York City Department of Information Technology & 
Telecommunications (DOITT https://maps.nyc.gov/tiles/#basemap-layers-wmts). 
  But after many tries, all I get is a totally blank layer.
   Here, in detail, is what I  have done:

1. right-click on WMS/WMTS in browser and choose New Connection
2. name box:  DOITT Monday
3. URL:  https://maps.nyc.gov/wmts/1.0.0/?REQUEST=getcapabilities
4. leave configuration default:  No Authentication
leave HTTP and options blank
5. click OK
6. "DOITT Monday" appears as a new item in browser under WMS/WMTS
7.  there are 15 sub-items under  DOITT Monday.  The CRS for each of them is 
EPSG:900913 , although the DOITT web  page led me to expect 4326  or 3857
8. I drag one of them ("basemap") onto the map canvas; right-click on it and 
set its CRS to EPSG:2263.  The project CRS remains 2263.
9. I see a msg at the top of the canvas:  "Used a ballpark transform from 
EPSG:2263 to EPSG:900913"  , which seems to me to be the opposite of what I 
asked for
10.  the added layer appears totally blank.  Toggling its checkmark in the 
layer panel has no effect.  Zoom-to-layer makes the scale go to a nine-digit 
number.  Zoom to 1:100 has no effect.
11. I tried again, with a new, blank project, with project CRS set to 
EPSG:900913.  I added one layer by dragging "basemap" from "DOITT Monday" onto 
the canvas.  The canvas remained blank.  I added one small layer from my real 
project, transformed it to 900613, and "zoomed  to layer" so as to focus on 
part of my park.  My  layer appeared but still no visible basemap.

 What am I doing wrong?   Thanks for any advice.
  Steve


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[Qgis-user] trouble adding a basemap from a WMTS source

2022-07-06 Thread Stephen Sacks via Qgis-user 
It turns out that my problem is not getting the map from New York's 
DOITT, but in re-projecting it from EPSG:900913 to the project's 
EPSG:2263.  If I leave it in EPSG:900913 it doesn't disappear.  But I 
worry that some trouble may result if my basemap has a different CRS 
from all the other layers.


=
Original post (7/4/2022, 8:17 PM):
My project CRS is EPSG:2263;  all 21 layers were created in this project 
with CRS   EPSG:2263  , which seems appropriate for a public park in 
Brooklyn, NY.  If I use Google Satellite Hybrid as basemap, everything 
looks to be in the right  place.  I would like to replace the Google 
basemap with one of many maps available from the New York City 
Department of Information Technology & Telecommunications (DOITT 
https://maps.nyc.gov/tiles/#basemap-layers-wmts). But after many tries, 
all I get is a totally blank layer.

   Here, in detail, is what I  have done:

1. right-click on WMS/WMTS in browser and choose New Connection
2. name box:  DOITT Monday
3. URL: https://maps.nyc.gov/wmts/1.0.0/?REQUEST=getcapabilities
4. leave configuration default:  No Authentication
    leave HTTP and options blank
5. click OK
6. "DOITT Monday" appears as a new item in browser under WMS/WMTS
7.  there are 15 sub-items under  DOITT Monday.  The CRS for each of 
them is EPSG:900913 , although the DOITT web  page led me to expect 
4326  or 3857
8. I drag one of them ("basemap") onto the map canvas; right-click on it 
and set its CRS to EPSG:2263.  The project CRS remains 2263.
9. I see a msg at the top of the canvas:  "Used a ballpark transform 
from EPSG:2263 to EPSG:900913"  , which seems to me to be the opposite 
of what I asked for
10.  the added layer appears totally blank.  Toggling its checkmark in 
the layer panel has no effect.  Zoom-to-layer makes the scale go to a 
nine-digit number.  Zoom to 1:100 has no effect.
11. I tried again, with a new, blank project, with project CRS set to 
EPSG:900913.  I added one layer by dragging "basemap" from "DOITT 
Monday" onto the canvas.  The canvas remained blank.  I added one small 
layer from my real project, transformed it to 900613, and "zoomed  to 
layer" so as to focus on part of my park. My  layer appeared but still 
no visible basemap.


 What am I doing wrong?   Thanks for any advice.
  Steve
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Re: [Qgis-user] trouble adding a basemap from a WMTS source

2022-07-04 Thread Patrick Dunford via Qgis-user 
If you are getting blank results there is a reasonable prospect of a 
problem with the service provider. This may include geographic 
limitations on the data access. Certainly from where I am, the page that 
is supposed to display the WMTS layers comes up blank, and a connection 
error results from attempting the steps below.


On 5/07/22 12:17, Stephen Sacks via Qgis-user wrote:
My project CRS is EPSG:2263;  all 21 layers were created in this 
project with CRS   EPSG:2263  , which seems appropriate for a public 
park in Brooklyn, NY.  If I use Google Satellite Hybrid as basemap, 
everything looks to be in the right  place.  I would like to replace 
the Google basemap with one of many maps available from the New York 
City Department of Information Technology & Telecommunications (DOITT 
https://maps.nyc.gov/tiles/#basemap-layers-wmts). But after many 
tries, all I get is a totally blank layer.

   Here, in detail, is what I  have done:
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[Qgis-user] trouble adding a basemap from a WMTS source

2022-07-04 Thread Stephen Sacks via Qgis-user 
My project CRS is EPSG:2263;  all 21 layers were created in this project 
with CRS   EPSG:2263  , which seems appropriate for a public park in 
Brooklyn, NY.  If I use Google Satellite Hybrid as basemap, everything 
looks to be in the right place.  I would like to replace the Google 
basemap with one of many maps available from the New York City 
Department of Information Technology & Telecommunications (DOITT 
https://maps.nyc.gov/tiles/#basemap-layers-wmts).   But after many 
tries, all I get is a totally blank layer.

   Here, in detail, is what I  have done:

1. right-click on WMS/WMTS in browser and choose New Connection
2. name box:  DOITT Monday
3. URL: https://maps.nyc.gov/wmts/1.0.0/?REQUEST=getcapabilities
4. leave configuration default:  No Authentication
    leave HTTP and options blank
5. click OK
6. "DOITT Monday" appears as a new item in browser under WMS/WMTS
7.  there are 15 sub-items under  DOITT Monday.  The CRS for each of 
them is EPSG:900913 , although the DOITT web  page led me to expect 
4326  or 3857
8. I drag one of them ("basemap") onto the map canvas; right-click on it 
and set its CRS to EPSG:2263.  The project CRS remains 2263.
9. I see a msg at the top of the canvas:  "Used a ballpark transform 
from EPSG:2263 to EPSG:900913"  , which seems to me to be the opposite 
of what I asked for
10.  the added layer appears totally blank.  Toggling its checkmark in 
the layer panel has no effect.  Zoom-to-layer makes the scale go to a 
nine-digit number.  Zoom to 1:100 has no effect.
11. I tried again, with a new, blank project, with project CRS set to 
EPSG:900913.  I added one layer by dragging "basemap" from "DOITT 
Monday" onto the canvas.  The canvas remained blank.  I added one small 
layer from my real project, transformed it to 900613, and "zoomed  to 
layer" so as to focus on part of my park. My  layer appeared but still 
no visible basemap.


 What am I doing wrong?   Thanks for any advice.
  Steve

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