Questions tagged [zoom]
Use this for questions about changing the zoom when display a map
442
questions
119
votes
14
answers
314k
views
What ratio scales do Google Maps zoom levels correspond to?
Can anyone provide me with a link (or some details) on the actual ratio to "zoom level" figures for Google Maps?
e.g. Google Maps Level 13 = 1:20000
- 1,341
26
votes
4
answers
44k
views
Leaflet mouse wheel zoom only after click on map
I'm working with the Leaflet JavaScript Library and attached a (working) map to my HTML Document. It is in the middle of the page, and when I'm scrolling down with my mouse wheel and arrive at the map,...
- 483
24
votes
1
answer
20k
views
Zoom further in than level 19 with leaflet javascript API?
We're using the leaflet JavaScript API with a tile layer which supports zoom level up to 19. I'd like users to be able to zoom further even if the tiles blur as they have to place markers to a high ...
- 413
20
votes
4
answers
22k
views
Using ArcPy to zoom to selected feature?
Is there a way to zoom to the extent of a selected feature using the ArcPy module in ArcGIS Desktop 10.
- 6,190
18
votes
9
answers
25k
views
Shapefile layers in QGIS don't display unless I zoom out
I have two shapefile layers in a QGIS project that have problems with zooming. One is a line I copied/pasted in a new layer from a set of height contours and the other one is a polygon layer I created ...
- 181
18
votes
4
answers
10k
views
Changing mouse wheel zoom settings in QGIS?
I'm having a problem with the mouse wheel zoom setting on my macbook trackpad. The zoom occurs far too quickly for any level of precision. I noted this comment in the dev log:
2004-08-14 [gsherman] ...
- 181
17
votes
3
answers
10k
views
Zooming to selected feature using PyQGIS
I want to create a function that selects a feature and zooms to it (similar in QGIS). Therefore there is following function:
QgsMapLayerRegistry.instance().addMapLayer(self.vlayer)
def zoomTo(self):
...
- 2,918
16
votes
2
answers
24k
views
Detecting zoom change in OpenLayers
There is no appropriate zoom event listener in OpenLayers v5.3 yet, but there is a workaround suggested in this ticket:
You can use this.view.instance.on('change:zoom', evt => console.log(this....
- 829
14
votes
3
answers
4k
views
QGIS hotkey assign: "select next feature and zoom to feature"
I have a dataset with 2000+ feature based on addresses. I need to zoom to each point individually and move them a little (no consistent shift so no other way to do it).
Selecting the next feature in ...
- 835
12
votes
1
answer
25k
views
Show/hide markers depending on zoom-level [duplicate]
I would like to show icons if the user zooms to level 7 or more and hide the markers when zoom level is 6 or lower. I've tried using the 'zoomend' property in my function like so:
var shelter1 = L....
- 711
11
votes
2
answers
3k
views
Tying visibility of features to zoom level by attribute in QGIS
I know how to make the visibility of an entire layer conditional on the zoom level.
Is there a way to do the same thing for specific features? I have a road data set, where each feature has a class ...
- 1,256
11
votes
3
answers
26k
views
Leaflet layers on different zoom levels. How?
I've added a polygon layer and a point layer to my leaflet map.
I would like the points to appear after a certain zoom level or when a "click" event occurs e.g. (polygons.on("click", function....)
...
- 611
11
votes
2
answers
10k
views
Disable doubleclick zooming in OpenLayers 3
I've searched for it on the entire web and finally I found on artamstrong.com how to disable a single feature like "mouseWheelZoom".
Here is how doubleclick zooming in OpenLayers 3 can be disabled:
...
- 346
10
votes
1
answer
2k
views
Zooming feature without selecting it using PyQGIS
When I need to zoom to a feature, I have to select it first using layer.select(feature.id()) then I can zoom using mapCanvas.zoomToSelected(layer).
layer = iface.activeLayer()
layer.select(1)
iface....
- 77.8k
9
votes
6
answers
44k
views
Zooming/panning map in QGIS layout independently from frame?
I am coming from ArcMap. Working in the layout view, I had buttons to zoom/pan data and other buttons to zoom/pan the view itself. In QGIS, I can't seem to be able to achieve this. The only buttons I ...
9
votes
4
answers
23k
views
How to slow the zoom transition speed in Leaflet?
I'd like to slow the speed of the zoom transition in Leaflet, but I haven't figured out how.
I'm using map.setView() a few times to change the zoom level.
I've tried the solution suggested here:
...
- 9,141
9
votes
5
answers
4k
views
Unable to zoom beyond scale of 1:2,256 in QGIS?
In QGIS, whatever might be the source, I couldn't zoom beyond the scale of 1:2256.
Whether it's a raster or vector, result is the same.
Does anyone know how to fix this ?
On @Chris' advice I've ...
- 1,441
9
votes
2
answers
10k
views
Zooming to layer extent in PyQGIS? [closed]
Regarding my plugin pyqgis 2.2, i can load a vector layer succesfully. But when i try to zoom to the layer extent it does not work.
How to do in order to zoom to the layer extent?
I have just ...
- 929
9
votes
1
answer
212
views
Zooming to each vector layer extent, one at a time, using PyQGIS
I'm trying to write a python script that zooms to each layer's extents and then exports the canvas as an image after every zoom.
I wrote a for loop that iterates through each layer, makes each one ...
9
votes
1
answer
13k
views
Zoom to feature by clicking cell in the Attribute Table
I have a layer which has FID field representing the unique ID of features. In QGIS, there is a Zoom to selected rows button on top of the Attribute Table. It has a shortcut (Ctrl + J) and it doesn't ...
- 77.8k
8
votes
3
answers
39k
views
Leaflet: Resize markers in layer when zoom in
May I ask how to resize markers in layer when zoom in?
var map = L.map('map', {
center: [23.364739, 115.187951],
zoom: 11,
minZoom: 11,
maxZoom: 18,
});
var ar_icon = L.Icon....
- 83
8
votes
1
answer
3k
views
Is it possible to set different scale dependent visibility for one layer classifications?
I'm working on a sewer and water network, so I need to set different scale visibility for primary, secondary and tertiary network.
- 130
7
votes
1
answer
11k
views
Leaflet Basemap zoom to maximum [closed]
When I zoom to maximum; more than 18 the basemap is gone.
How can we keep the basemap even when we zoom to maximum?
This is my plunker example
- 1,246
7
votes
1
answer
21k
views
Zoom to polygon bounds on click. Leaflet ´, GeoJSON
I have a leaflet map with a lot of polygons (borders). I would like to zoom to the bounds on the polygon, when the user click.
Until now its only possible for me to zoom to the the bounds of all the ...
- 611
7
votes
3
answers
14k
views
change width of outline for leaflet map depending on zoomlevel
I want to change the outline of a polygon depending on the zoomlevel. I thought it's easy to implement but there must be something wrong. My polygons dissapear when I try it with this code:
to get ...
- 887
7
votes
4
answers
4k
views
Point from GeoPackage disappears when zooming in QGIS
In QGIS 3.4.1 I had a vector layer stored in GeoPackage format with a text field ("lbl_text") that was being used to create labels on a map. After creating three points I decided it would be ...
- 193
6
votes
4
answers
6k
views
How to limit zoom level in OpenLayers 2.x
I would like to have only 3 levels of zoom available (from level 6 to level 8).
demolayer2 = new OpenLayers.Layer.WMS(
"abc...","http://localhost:8080/geoserver/gwc/service/wms",
{layers: 'def...', ...
- 191
6
votes
2
answers
12k
views
Label font size and scale QGIS 3.0
How can I make it that the font size of the label changes when I zoom in and out? I have a polygon and I want the label get bigger when I zoom in and smaller when I zoom out (just like the polygon ...
- 71
6
votes
1
answer
6k
views
Leaflet: Scroll wheel controlling map zoom and not drop down menu
Edited 6/19/2015
I have a custom leaflet control box with a drop down menu. When I use the scroll wheel over the menu, the map changes zoom level instead of scrolling the menu. The problem occurs ...
- 83
6
votes
2
answers
3k
views
OpenLayers plugin in QGIS 2.6.1 crashes and errors with zoom
I have a major problem with the OpenLayers plugin. The maps of the plugin won't zoom to the right scale, or they just simply crash. I never had these problems in the old QGIS versions. This way, I can'...
- 69
6
votes
2
answers
1k
views
How to disable map navigation in the ArcGIS Server JavaScript API v4.x
In the older version 3.x of the ArcGIS Server JavaScript API, it was possible to disable map navigation using disableMapNavigation() as explained in Disabling map in ArcGIS API for Javascript
What is ...
- 21.2k
6
votes
2
answers
3k
views
Hide old tiles while loading new ones when zooming in Openlayers
Standard behavior, while zooming in and out in Openlayers, is that the current tile gets resampled and displayed stretched or compressed until the new tile is available. That's how it looks like while ...
- 970
6
votes
1
answer
1k
views
Is there touch screen support in QGIS for Windows?
I have a new 2in1 PC (laptop and tablet).
It would be very nice to navigate in QGIS using its touch screen I.e. zoom in and zoom out using double finger touch, like on a mobile phone, etc.
Maybe ...
- 61
6
votes
1
answer
2k
views
How to make OpenLayers 3 behave like Google Maps when using mouse scroll
Google Maps API shows a message over the map when a user scrolls with mouse over the map.
The message advises the user to press the Control key while scrolling with the mouse over map. This is a very ...
- 93
5
votes
3
answers
3k
views
QGIS - Disable Mouse Wheel Zoom
I'm using QGIS 2.16.x and the mouse wheel preference to disable zooming does not seem to be available. I've tried locking the scale but when the magnifier function is enabled, the zoom function still ...
- 93
5
votes
3
answers
7k
views
Zoom map to a scale in Leaflet
I am preparing a printable map in leaflet. For this purpose I would like to make a map zoom to a particular scale eg. 1:500 or 1:1000. But Leaflet zooms a map based on the extend and zoom level only. ...
- 771
5
votes
1
answer
479
views
Showing points as one big point
I've already made a map in QGIS, but the problem is that all the points of the coordinates are concentrated in one area in the map and I have to zoom in to see that it is several points. Is there any ...
- 51
5
votes
2
answers
7k
views
Disable double click zoom event in Leaflet for R
Is there a way to disable the double click zoom in Leaflet for R?
I've created a Shiny app that changes polygon styles when a country's region is clicked on/off. If you select and immediately ...
- 1,902
5
votes
1
answer
964
views
Can I set the Project in QGIS to display data at Zoom Full on startup?
I have a project with several .qml files assigned to SHP files with the same name but different data. I am just changing the SHP files, but when I start the project with different SHP I see just the ...
- 173
5
votes
2
answers
14k
views
Inserting zoomed-in plot with full scale plot in sp package in R
I am using the sp package in R to plot sampled points along a river. However, I would like to zoom in to a sampled area of the entire river, and plot this zoomed area on the full length of the river. ...
- 245
5
votes
1
answer
580
views
Automatically zoom to feature which is edited in attribute table in QGIS
I want to edit many features in the attribute table, for which I have to see imagery in the background of the features. To speed the process up, ideally I do not want to use the mouse to click ...
- 145
5
votes
2
answers
2k
views
Setting zoom level from table attributes using ArcMap
Is there anyway to set the zoom level after double-clicking on black arrow in table attributes?
It seems to default to 1:4,000. As I'm checking over hundreds of areas and it would be nice to be able ...
- 185
5
votes
2
answers
13k
views
How to control the zoom amount in Cesium.Camera.flyTo ?
The following code flies the camera to a particular destination. But how do I control the zoom on the particular destination?
viewer.camera.flyTo({
destination : Cesium.Cartesian3....
- 103
5
votes
1
answer
3k
views
Converting miles above ground to zoom level?
I've got a spec that details what features are to appear on a map at certain number of miles above the earth. So for example "Render this point when closer than 400 miles above the earth".
How do I ...
- 408
5
votes
1
answer
3k
views
How to decide geohash length based on zoom level?
I want to decide geohash length based on zoom level, how can I do that because so far I am unable to find any standard way to do so?
For example, current zoom level is 10 and geohash is "...
- 151
5
votes
1
answer
3k
views
Leaflet js style geojson layer according to zoom level
Leaflet js beginner following/adapting the choropleth example. I need to get something like this mapbox map where the feature styles change according to zoom level. I am loading a line geojson that ...
- 53
5
votes
2
answers
4k
views
Zooming to WMS layer after CQL filter in OpenLayers?
I created a layer that contains points and I added it to a map as WMS layer in OpenLayers. I did a CQL filter and it works but I'd like to zoom to the selected point when I worked with getextent or ...
- 93
5
votes
1
answer
1k
views
Loading memory layer into map canvas and zooming to it with PyQGIS
I would like to load a vector memory layer into the map canvas with PyQGIS.
The background is, that I create a memory buffer layer around point data. While iterating the points I would like to ...
- 417
4
votes
2
answers
9k
views
Arcpy zoom to selected features not working
I'm writing a python script to automatically take some snapshots of my ArcMap in 10.2, but I can't get the zoom to selected features tool to work properly.
I have a layer called carereport, which I ...
- 457
4
votes
2
answers
11k
views
OpenLayers2 - zoom to selected feature
If I have this vector layer:
var vectors = new OpenLayers.Layer.Vector("vector", {isBaseLayer: false});
var feature = new OpenLayers.Feature.Vector(
OpenLayers.Geometry.fromWKT(
...
- 91