Questions tagged [matplotlib-basemap]
A library for plotting 2D data on maps in Python
48 questions
4
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1
answer
203
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Clearing some lines in QGIS leads to features with no data
I'm trying to cut and delete some lines in a shapefile with QGIS. The output of this edit is the input to the Basemap.readshapefile function in matplotlib.
My edited shapefile does not work well. It ...
- 399
0
votes
0
answers
66
views
Using QGIS to edit shapefile without creating 3D shape types
I have edited a shapefile with QGIS where I have cut some polygons to get open lines. The original file works in my application, whereas the edited one does not. I'd like to understand what's going on ...
- 399
1
vote
1
answer
315
views
Define your own latitude and longitude projection
I am converting (rotating) vectors from Lambert to latlon (and viceversa) in Python. But in Basemap or Cartopy, I see that you do not define the lat and lon projections, you just define your Lambert, ...
- 133
1
vote
0
answers
553
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Plotting city locations on Python 3 [closed]
My question is a follow-up of this:
plotting US cities on a map with matplotlib and basemap.
I would like to use some Python library to plot on a map city locations, starting from a list like this:
...
- 11
1
vote
0
answers
311
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Getting the coordinates of the points inside of a shapefile/Getting the coordinates of the closest point if there are none
I'm working with an ERA5 (0.25x0.25 degree) temperature dataset for Europe in order to get average temperature in small statistical regions called NUTS 3. So far I've used a shapefile of the NUTS 3 ...
- 173
1
vote
1
answer
2k
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Display GeoTIFF single band image in Python
I have a single band GeoTIFF image which displays correctly in QGIS. However I tried viewing the same file using matplotlib and rasterio but I get a different output.
Is there something that I am ...
- 91
0
votes
0
answers
855
views
Matplotlib Basemap how to set EPSG to be consistent with new version of pyrpoj
I am getting a Matplotlib Basemap error related to pyproj and setting the EPSG. (I know Basemap is being depreciated, but this is what I am working in for now.) As a result, I can't plot the ...
- 990
0
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0
answers
252
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When I get the total bounds of a shapefile, which are llcrnrlon, llcrnrlat, urcrnrlon, and urcrnrlat? Need it to use Maptlotlib Basemap
The goal is to use an ESRI webmap as a basemap beneath a shapefile for a script that visualizes earthquakes in the Philippines. But first, I'm practicing in using Basemap in a separate script.
...
- 1,257
1
vote
0
answers
1k
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Shapely “parallel_offset” with distance in meters from Lat/Lon coordinates
I need to find a LineString at a distance in meters from a line with coordinates in Lat/Lon. I am trying this approach based on what i found in this question https://stackoverflow.com/questions/...
- 73
2
votes
0
answers
162
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Plotting Geopandas Gallery example fails?
I have been having trouble getting the figures from the example provided in Geopandas Gallery examples. When I ran these scripts in Jupyter console:
import geopandas
import geoplot
import matplotlib....
1
vote
0
answers
231
views
Basic Python plotting [closed]
Sorry if I sound like I don't understand, but I've been reading around trying to figure out how to do geospatial plotting in Python. I keep running into errors despite the examples I've seen appearing ...
- 11
1
vote
1
answer
321
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Shifting data from a GRIB2 file
I have successfully opened a grib2 file from NCEP and I am having trouble being able to convert the coordinates to plot them using matplotlib, using the custom convertXY function from this post Plot ...
- 129
3
votes
1
answer
2k
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draw map scale in geopandas
Is there a geopandas version of basemap's m.drawmapscale function?
If not, can I somehow utilize basemap's drawmapscale function within geopandas?
- 131
3
votes
1
answer
3k
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Spreading/dispersing overlapping points?
I have a set of 150 sites globally, and I want to map them, and colour by a given variable. Unfortunately they are very non-uniformly distributed, with many of them in small clusters of only a few ...
- 494
1
vote
0
answers
2k
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Plotting Shapely polygons on basemap
I have some polygons and multipolygons created using latitudes and longitudes using shapely(there is no shapefile). I want to plot them using basemap. However they don't show up. When I use matplotlib ...
- 111
1
vote
1
answer
1k
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Can't import shapefile in Python
I am trying to plot district boundaries on a map of Nepal. For that I downloaded a shapefile of districts in Nepal from this site:
http://www.arcgis.com/home/item.html?id=...
- 67
3
votes
0
answers
927
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All contours are not getting converted to shapefile in python
I am trying to create isoline plot for a weather parameter. Inputs are Lat, Lon and Value. They are read from csv file. When I plot the contours using matplotlib, the code works fine and generates ...
- 31
0
votes
0
answers
670
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Plot BNG grid data on Matplotlib Basemap
I would like to plot UK population density data in Matplotlib Basemap.
I got data in ESRI ASCII using BNG OSGB63 from
https://catalogue.ceh.ac.uk/documents/61f10c74-8c2c-4637-a274-5fa9b2e5ce44
and ...
- 101
3
votes
1
answer
8k
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Smoothing the contour line in Python?
I used the NCEP 2.5 degree*2.5 degree data to plot the 850 mb wind field and heights. But, I didn't know how to smooth the contour line. Scipy.ndimage.zoom didn't work well and some details are missed....
- 133
2
votes
1
answer
3k
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Masking land with matplotlib basemap in Python?
I've been trying to mask land with .is_land from mpl_toolkits.basemap.
When running following code:
map = Basemap(llcrnrlon = 7.298914095230308, llcrnrlat = 58.98235690451632,
urcrnrlon =...
- 121
9
votes
2
answers
12k
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Checking if a geocoordinate point is land or ocean?
I got the corner geo coordinates from a xml product file of a Sentinel-1 GRD SAR image. When looping through the pixels of the image I wish to check whether it represents land or sea.
I figured I ...
- 91
7
votes
1
answer
3k
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Unable to load a shapefile with Basemap
I'm try to load this shapefile with Basemap in order to plot it in Python:
http://geodata.gov.gr/en/dataset/periphereies-elladas/resource/7c80a2c1-93b7-4814-9fc4-245e775acaa6
But I get the following ...
- 73
1
vote
2
answers
10k
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Using Google Maps image as layer with Matplotlib Basemap?
I have produced a heat map of assaults in Sydney by suburb. However, my map looks a bit plain and I'd like to do something fancier - I'd like to use a Google Maps image as a background layer - I haven'...
- 215
2
votes
2
answers
1k
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How to interpolate data using basemap?
I have been trying for a long time now to make this simple basemap work. However, there is something with the format of the data basemap expects, which I cannot figure out. Can anybody help me ...
- 2,810
3
votes
0
answers
488
views
Raster flipping latitude or not showing shapefile on basemap
I am trying to save a 2D numpy array as a raster, and then split the raster using shapefiles. When I create the raster, I either have the problem of the latitude being flipped upside down, or that the ...
1
vote
0
answers
164
views
Creating neat map in basemap using simplified boundaries?
Is it possible to create a neat map like using basemap (mpl_toolkits.basemap)? I am particularly curious to know if there's a way to "simplify" the boundaries as they are rather edgy in the ...
- 705
1
vote
1
answer
3k
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Get map from OpenStreetMap and use it as a background with basemap
I want to take a bounding box, use the OpenStreetMap API and get a tile, then use it as a background in basemap. This should be easy, but I haven't been able to figure out the API.
- 269
4
votes
2
answers
24k
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Get lat-long of US cities and plot them on a map using matplotlib and basemap [closed]
I am hosting a conference and want to show a map of where the attendees have arrived from. I have an input file with the names of the cities. I would like to put a dot on each city, and have the size ...
- 269
1
vote
1
answer
118
views
Matching Python and GRASS projection
I have a colleague producing maps with the following Python Basemap projection:
from mpl_toolkits.basemap import Basemap
m = Basemap(width=6000000,height=3900000,
resolution='l',projection='...
- 1,652
2
votes
1
answer
4k
views
Plotting classification map using shapefile in matplotlib?
"I have been struggling with python map plotting since past few days. I have realized that one can use python for plotting comparatively easy maps, but when one has to display detailed information, it ...
- 695
1
vote
0
answers
977
views
Raster and shapefiles are not overlapping in matplotlib?
I plotted a raster map using matplotlib. When I overlay a shapefile, the raster seems to be shifted a bit.
The same raster and shapefile overlap each other perfectly in ArcGIS.
Here is what I am ...
- 695
7
votes
1
answer
12k
views
Plotting raster maps in python?
I am trying to plot raster map using Pyhton. Image is not being saved, though it appears.
Moreover, pixels are not appearing on the exact place. I am getting image as shown below (which is WRONG, ...
- 695
1
vote
1
answer
2k
views
Hide meridians and parallel lines from plot and add TICK marks in matplotlib?
I want to hide the meridian and parallel lines from my plot and add the tick marks.
I could remove the lines by setting linewidth=0, but how to add the tick marks with each Lat-Lon label.
meridians =...
- 695
1
vote
0
answers
3k
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Reading shapefile faster using Python basemap (and pickle)
I am trying to plot a simple 'merc' map with boundary from shapefile. The total size of the shapefile ne_10m_admin_0_countries_lakes.shp is just 8mb. The simple mslp surface plot from GFS data took ...
- 156
2
votes
0
answers
715
views
Grid parameter restriction of mpl_toolkits.basemap.maskoceans
I have plotted the image below with the use of matplotlib and mpl_toolkits.basemap. However I am not satisfied with the result. The image is still very blocky near the coast line. The grid parameter ...
- 121
0
votes
0
answers
202
views
Number of polygons in shapefile too high
I downloaded administrative shapefiles from www.gadm.com/country (China). The Python (Basemap) code below tells me that there are 2365 polygons in it. However the .csv and .dbf files included with the ...
- 963
0
votes
1
answer
2k
views
Why do pyproj and matplotlib basemap produce different results when they convert my lat-long data into a CRS?
pyproj and matplotlib basemap seem to produce differing x-y values when they convert my lat-long data into the same CRS (such as Albers Equal Area). These x-y values tend to be off by hundreds of ...
- 295
1
vote
1
answer
2k
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Adding map from website maps-for-free.com as basemap on QGIS?
How can I add map from maps-for-free.com as my base map on QGIS 2.10 Pisa?
My operating system is Windows 7, x64 bit.
@Spacedman. Here, I've gone to ~/.qgis2-->python-->plugins-->quick_map_services--...
- 47
1
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0
answers
150
views
Matplotlib Basemap Coastal Coordinates
Is there a way to query basemap to extract all coastal coordinates? Say user provides lat/lng and the function returns true/false if the coordinates are within 1km from the coast?
Links are more than ...
- 181
1
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0
answers
2k
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Using arcgisimage along with python basemap
I am utilizing maps provided through the ArcGIS rest service when i plot information in Python, but have some problems understanding the different options I have when I request I map. The ...
- 196
0
votes
1
answer
2k
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Shapefile projection for Matplotlib Basemap
Preface: First time working with GIS data.
I'm using python's Basemap library for overlaying data on maps.
The tutorial I'm using includes a shapefile for London (london_wards.shp).
I use the ...
- 103
1
vote
2
answers
2k
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Why can't Basemap's readshapefile read the world_adm0 shapefile?
I'm using the world shapefile that can be found at https://trac.openstreetmap.org/browser/applications/editors/merkaartor-branches/merkaartor-0.14-fixes/share/world_shp/world_adm0.shp?rev=17052.
...
- 141
2
votes
1
answer
1k
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Python Basemap fails
I am using Anaconda 2.1.0 and Basemap installation is successful
conda install basemap
However, I keep getting the following error when I try to project lat,lon to a planar:
Assertion failed: (0), ...
- 441
2
votes
1
answer
889
views
QGIS: how to combine a GeoTIFF with a country border shapefile?
I have two files. A GeoTIFF with different values and a shapefile with country borders of this area. Can I generate with these two files an image with the country borders and the data from the GeoTIFF?...
- 553
2
votes
0
answers
687
views
How to update country borders in matplotlib.basemap?
I'm using basemap-1.0.7 and generated an image of Africa with the drawcountries() method.
The border between Sudan and South Sudan is missing. Does someone know how to update this country borders?
- 553
1
vote
1
answer
459
views
how to transfer a geotif with WGS84 to a mercator array for ploting it with matplotlib.basemap
I want to plot data from a sensor raster file (tif) to a map using basemap.
I have a geotif with 'WGS 84'
>>> gtif = gdal.Open("example.tif")
>>> print gtif.GetProjectionRef()
...
- 553
0
votes
0
answers
816
views
Freezing basemap using cx_freeze
I am working on script and I´d like to freeze it for use in computers who haven´t got python installed-
The script is running fine but when I freeze it using cx_freeze an error appears.
at the end ...
- 795
1
vote
1
answer
2k
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Orthographic projection in Python Basemap
I'm trying to plot a GeoTIFF in Python using Basemap. I can do so correctly with cyl projection like this:
m = Basemap(projection='cyl',
llcrnrlat=LL[1], urcrnrlat=UR[1],
...
- 1,652