Questions tagged [plotting]

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Method of interpolation to create weighted heatmap rasters in R from point data

I want to create a geospatial heatmap that is weighted by a specific variable sourced from georeferenced points. An example dataset is 'us_states' from the 'spData' package. I want to take this data, ...
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5 votes
1 answer
843 views

Rotating a set of points with an angle with rotation matrix: why is result "distorted"

What might be going wrong with my rotation of set of points as result look distorted? I have a set of points (X,Y). I calculate the mean (= "center of gravity") of them and subtract it from ...
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1 vote
1 answer
43 views

Imported .csv file plotting incorrectly

I have imported a csv into ArcGIS, then displayed xy data. For some unknown reason to me, the point are plotting incorrectly. I am using an ESRI base map in WGS 84 web mercator aux sphere and the ...
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2 answers
141 views

Proportional symbol map in QGIS

I want to create a map of India showing 30 districts that have the highest COVID-19 cases as of 31 December 2020 using QGIS. I marked the 30 districts and added the CSV file to this layer. I want to ...
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2 votes
1 answer
59 views

What does the "scale" setting when plotting a NDVI or EVI time series?

I adapted the script from the guide for ui.Chart.image.series to my region of interest and time period: // Import the example feature collection and subset the forest feature. var bm = ee....
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1 vote
1 answer
1k views

Not getting different colors on Folium package

I am trying to plot some points on the map, where the points are marked based on geo-coordinates and each point belongs to a category. I am trying to set the color of the categories from the color ...
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0 votes
1 answer
250 views

Inaccurate georeferencing when plotting raster files using rasterio

I am trying to develop a plot of a raster image with a background map. I used rasterio for reading the raster file and contextily for obtaining the background map following this tutorial. The plotted ...
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  • 375
0 votes
1 answer
509 views

ggplotting st_cast("MULTILINESTRING") lines: ends points undesirably connected to starts using R

I have the lat-lon positions of various individuals. When I plot multiple individuals at the same time, I see odd lines over land, and have been investigating why. It transpires that plotting ...
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1 vote
1 answer
291 views

Why are my circles plotted on maps, using buffer data from GeoPandas, not the same size as if I plot on Google Earth?

I am using GeoPandas and matplotlib to plot some circles of desired radius around a set of points. I find that the circles are not the right size on the maps, but the equivalent sized circles drawn on ...
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1 vote
1 answer
143 views

Blank spaces in large format plotter prints

I keep getting a blank swath when printing large format PDF files to my plotter. I am trying to plot a single page that is 42" (maximum width of roll for this plotter) by up to 120" in ...
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1 vote
0 answers
80 views

Plotting points of restaurant locations onto NYC Taxi Data Shapefile Plot [closed]

I'm trying to plot the locations of restaurants in NYC onto the plot of NYC boroughs that I made from the shapefile provided by the NYC Taxi Data website using Rstudio. I don't understand why it is ...
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1 answer
69 views

Using Google Earth to figure out the coordinate reference system from only lon, lat information

Lately, I've been trying to use lat/long information to plot on QGIS without any good results because I lack the correct EPSG code for the coordinate reference system. This is not the case with Google ...
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0 votes
1 answer
126 views

XY points not displaying

Using ArcMap, I am trying to add a series of co-ordinates to a map to show the distribution of shelf seas I am analysing. However, when I go through the process of adding XY data to the basemap, it ...
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2 votes
1 answer
691 views

AIS Data Gaps - plotting as lines in QGIS

I am currently attempting to plot AIS data from our on board AIS receiver in QGIS. (https://en.wikipedia.org/wiki/Automatic_identification_system) My current processing steps are :- Import the AIS ...
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3 votes
2 answers
2k views

Plotting lon/lat point (without manual conversion) on XY map using GeoPandas?

I am data scientist not experienced in GIS and need to do some simple map plotting of the Netherlands. Using Geopandas everything works out nice and dandy for my purposes however I am stuck on 1 ...
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3 votes
1 answer
3k views

Creating chloropleth maps in geopands with 'user_defined' bins

As suggested in the geopandas mapping tools documentation, I want to create a chloropleth map using a custom defined bin sizes: world.plot(column='gdp_per_cap', cmap='OrRd', scheme='user_defined') ...
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