Please excuse a naive question from a new QGIS user.
I have installed QGIS (version 2.14.1-Essen, code revision ea85bef) on
my Dell desktop running Windows 7 Home Premium. I've failed on my very
first task, namely to create a layer using data from OpenStreetMap.
Very carefully following
I'm trying to create a layer with features that reflect two attributes.
I want each point to be marked by a circle whose (1) color reflects its
type (city, town, or suburb), and whose (2) size reflects its population.
From layer properties, I first select Style and choose "Categorized"
based
To several people who replied to my request for help in finding a
shapefile of Europe: Thank You ! You've given me what I need.
Steve
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I would be grateful if someone would tell me where I can get a shapefile
for the countries of eastern and western Europe. I want just polygons of
country borders. A few major cities would be nice, but I do NOT need
streets. I'll want to be able to color each country according to my own
list of
Phil -
Thanks for sending that link to a relevant video. I had trouble
using it because of the differences between the 2.8 and 3.0 GUI. But
the video's mention of using moving and rotating tools turned out to
help me solve my problem. Apparently, the "rotation" input box at the
bottom
I am using QGIS 3.4.12-Madeira . I have successfully superimposed a grid
on my map, using two different methods: (1) View > Decorations > Grid
and (2) Vector > ResearchTools > grid . With either method I see the
grid just as I want it. My problem comes in rotating the grid _without
rotating
I'm mapping the location of trees and plants along the famous Promenade
in Brooklyn, NY. Above a bottom layer of GoogleSatelliteHybrid, I've
drawn polygons representing 35 gardens, and then there are layers for
trees in each garden, plants, etc. The project CRS is EPSG:2263 since
having
the time to follow up with the emails.
All the best with your endeavours.
~Neil B.
On Fri, May 15, 2020 at 7:52 PM Stephen Sacks <mailto:sack...@earthlink.net>> wrote:
Hi Neil,
With your help, I have successfully brought the corners of our
gardens back from Pen
I, too, have been unable to launch QGIS since the recent win10 update.
The message I get is
"Could not load qgis_app.dll . . . The specified module could not
be found. . . . Check C:\ProgramFiles\QGIS3.10\bin\qgis-ltr-bin.env
for correct environment paths"
I looked at the .env file,
On my website is a map created by qgis2web. I need advice on how to
link map features to photos ( jpg files). In desktop QGIS I can put
file:///C:\[folder]\[subfolder]\[filename]
in the attribute table and the user can click on it in the popup. But I
don't know how to reference
I have added to my QGIS project an aerial view from New York City's
Dept of Information Techn (DoITT). My problem is that the output from
qgis2web includes all my layers except the aerial view. DoITT says its
maps are "compatible with most JavaScript web mapping libraries such as
I want an aerial image from New York City's mapping service (DoITT) to
serve as a basemap for my qgis desktop project. I intend to use
qgis2web to put on the web my map of Brooklyn's Promenade gardens. It
seems that I should be able to click Layer > add Layer > add WMS/WMTS
, but I'll
Thanks Phil for your reply. My knowledge of html and Java is minimal.
I need qgis2web to write it for me. I got an aerial view from Mapbox
that looks OK with my polygon and point layers in my desktop QGIS. But
qgis2web crashes unless I select OpenLayers or Leaflet. When I send
the
I want my map to be available on a free web host. QGIS2web seems to do a
good job of preparing it for export. My base map is Google Hybrid.
Does that mean I must use Google Cloud as web host? Can I use files
created by QGIS2web on other web hosts ? (Infinityfree, Byethost,
WordPress,
Hi Jorge,
Thanks for your reply to my request for help in getting a base map
from Mapbox.
I'm using QGIS 3.10.12 - A Coruna on a plain vanilla Dell desktop
running Windows 10.
When I click on the link in your message my Chrome browser opens a
tab showing hundreds of lines of HTML,
For the first time, I'm trying to use a map from Mapbox as a base map in
QGIS. I opened an account at Mapbox.com and made a map there using
their "Satellite streets." I clicked Publish and chose Publicly
available. I copied that map's Style URL and Access token and plugged
them and my
YES !!! I went back and re-tried several attempts I
had made to get a satellite base map from Mapbox. In every case when I
change the "S" in my Mapbox username from uppercase to lowercase it
works flawlessly.
Thank you Andrea and Jorge (and Ben Hur and Richard who
I need an orthoimagery basemap layer for a project involving a public
park in Brooklyn, NY. I'm hoping that what I want is at :
https://maps.nyc.gov/tiles/#aerial-layers-tms .
Instructions at: www.maps.nyc.gov/tiles/#qgis
tell me to install a plugin called " TileLayer Plugin". I
I'm writing a Python script to load a "qml" style file. The following
two lines work correctly:
lyr1 = iface.activeLayer()
lyr1.loadNamedStyle('xxx.qml')
but the following two lines cause an error message:
lyr2 = instance.parameterAsSource(parameters, "INPUT", context)
I'm using qgis2web to move a map from my desktop (QGIS 3.16) to a web
host. It works well except that jpg images, which appear correctly when
I click on point features on the desktop, don't appear on the web .
Instead, the web version tries to execute a link of the form
Sebastian Gutwein wrote:
If you change it to hidden in the layer properties>attribute form>
widget type you won't see it in the identify window or feature form
window.
The default is text.
On Sun, Mar 20, 2022 at 8:18 PM Stephen Sacks via Qgis-user
wrote:
I would like to limit whi
I would like to limit which fields appear in the popup window when I
click on a feature. In the layer's attribute table, I can Hide a field
but it still appears in the popup window when I click a feature with the
Identify tool.
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Please pardon what may be a dumb question from a self- (half-) taught
student of Python. I often steal fragments of code from the internet
(especially including this forum) and sometimes get an error message
like "xxx is not an attribute of yyy" . My problem, I think, is a
missing " from
Adam -
Thanks for your sage advice. Prepending file:// solves my problem
when the target HTML file is on my desktop hard drive. The arguments
are sent and received correctly.
I still have what turns out to be an unimportant problem when the
target HTML file is on the web (I use a
I want to create a situation where clicking on a feature in a vector
layer opens an HTML file and passes several attributes of the feature
to the HTML file. I have successfully created an action which opens the
HTML file, but I can't figure out how to pass the arguments.
My action
In my desktop QGIS project, I define an "action" that opens an HTML page
and passes parameters to it. I will use qgis2web to move the project to
a web site and would like the web user to trigger that action by
clicking on a feature. Is there a way to do this?
Steve
has the same 'base name'.
If all that fails: I would create a Feature Request for it (or start
using Geopackages ...)
Note that using geopackages, you also have 1 file, and you can save
style INTO the geopackage (and even put more layers+styles into it etc
etc).
Regards,
Richard Duivenvoorde
On
When I write a layer as a shape file, it appears on my C: drive as six
files, all with the same name but different extensions. Then I zip
those six into a single file (xxx.zip). When I reload that layer from
the zip file (Layer > AddLayer > VectorLayer > File > Dataset >
xxx.zip), QGIS is
- Phil
*From:*Qgis-user *On Behalf Of
*Stephen Sacks via Qgis-user
*Sent:* Sunday, 29 May 2022 5:29 AM
*To:* qgis forum
*Subject:* [Qgis-user] adding a layer from a zipped file
When I write a layer as a shape file, it appears on my C: drive as six
files, all with the same name but different
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
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
I would like to terminate a Python script gracefully. Both quit() and
exit() not only abort the script but end the entire QGIS app. For
example, if a file I want to read doesn't exist, the following four
lines of code terminate QGIS:
filePath = Path(fName)
if not filePath.is_file():
In case there may be someone out there who is interested in my question,
below is Asim's answer (with one correction he made). When run in the
Python console, this code causes execution of the script to stop and a
window to pop up titled "Execution error" with my explanatory message.
And,
ttps://docs.qgis.org/3.28/en/docs/user_manual/map_views/map_view.html#interaction
[1]
https://docs.qgis.org/3.28/en/docs/user_manual/working_with_vector/editing_geometry_attributes.html#digitizing-an-existing-layer
Le 11 juin 2023 01:22:43 GMT+02:00, Stephen Sacks via QGIS-User
a écrit
My intention was to create a new vector layer consisting of several
polygons. I used the CreatePolygon tool to mark the four vertices of a
rectangle. I must have done something wrong because I've ended up with
a polygon that seems to belong to no layer. In desperation I ran the
following
In my desktop QGIS I have a short Python script that opens an HTML page
including arguments (attributes of the selected feature). When I use
QGIS2web to put the project on the web, I would like the user to
trigger that action when he/she clicks on a feature. I would be
grateful for advice
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