Questions tagged [plot]

a graphical technique for representing a data set. Usually showing the relationship between two or more variables.

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1answer
38 views

Problem starting the plugin Data Plotly

I'm using QGIS Desktop 3.10.3 with GRASS 7.8.2 I tried to run the plugin "Data Plotly" https://anitagraser.com/2017/12/06/data-exploration-with-data-plotly-for-qgis3/ After installing the plugin I ...
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15 views

How set default symbol point by a vector image from coordinates in R plot?

I'm just starting geostats in R and I would like to use a vector picture (in SVG, PDF or EPS format) that I created as a symbol for my points (spatial coordinates) instead of using the default symbols ...
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7 views

Matlab mapshow with NaN in different color

I would like to have a different color for NaN values however when I plot this code bellow the A matrix is plotted wrongly not of the size of A but smaller by one pixel for rows and one for column. ...
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20 views

How to plot pies or histograms around points (GeoPandas) containing different level values indicators?

This is my code (a simple sample of df). I'd like to have around each point on a map, an histogram or pie showing the mechanical bikes out of the total. import pandas as pd pd.DataFrame( {'...
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20 views

Plotting alignment issues with plotting raster list of raster objects and multiple polygons together

I am very new to R and am trying to plot one object from a raster list with multiple polygons (boundary shapefiles) together in one plot. When I resize the plot window, however, the alignment of the ...
3
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1answer
52 views

Plot points with coordinates from txt-file [duplicate]

I'm using QGIS 3.12. I have a list of coordinates in txt file, as follows "longitude" "latitude" 48.819056, 2.127009 48.782213, 2.143340 48.801580, 2.355238 48.904471, 2.296038 How to ...
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1answer
50 views

Unable use a Temporal Plot Tool in GRASS GIS

I installed GRASS GIS following the tutorial on the website for the Ubuntu 18.04 version. However, the Temporal Plot Tool function is not working, and is giving an error related to python. Below is ...
2
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1answer
37 views

Insert Dataframe data into a map using Geopandas

I posted my question in stackoverflow previously, howeverI think this site is a better place to find some clues (this is my first project with spacial data). I need to insert some coordinates from a ...
1
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1answer
56 views

Rasterio histogram save as image

I have create some histogram using DEM as dataset and rasterio using show_hist to take histogram but I can't find some way to save this histogram as image.any idea? import rasterio from rasterio.plot ...
2
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0answers
19 views

Plotting raster and vector data on same Plot

I have a raster and croped it by vector boundary. Vector reprojected to crs of the raster, but when I plot it does not show on the same figure? Something with plotting extend, but how to make them ...
1
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1answer
34 views

Draw edges connecting vertexes (by id) on QGIS

I've been trying to figure out how to draw edges connecting a series of geographical points. There are many solutions that I've thought of but none of them take any advantage of the QGIS tools. ...
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1answer
34 views

Problem when import vector data from GRASS GIS within RStudio

I am trying to use GRASS GIS 7.6 within RStudio and import a polygon which is in WGS 84 (EPSG 4326). I have created successfully the location and the mapset in GRASS GIS. When I use the command v....
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24 views

R: Why is my map including the entire world WSG84 space, when all I want plotted is New Zealand?

This seems to be a very easy problem to solve, but about two hours of searching hasn't led me to the answer. I have a GIS file that I downloaded in WSG84 ESPG:4326. I read in the file using readOGR. ...
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3answers
280 views

Google Earth Engine with Folium and Sentinel-1 Plotting

I'm attempting to plot Google Earth Engine Sentinel-1 SAR data in a Jupyter notebook with Python and Folium. To do this I'm trying to combine two pieces of documentation: EE Python Install -> Map ...
3
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2answers
75 views

Plotting point every x m2 in polygon using QGIS plugin

I'm trying to work out whether its possible to plot a point every so often within a polygon. For example, if I have a polygon thats 200x200m, perhaps I could plot a point at every meter squared ...
1
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1answer
71 views

`tmap` basemap in `plot` mode

I have a raster and I'd like to underlie it with a basemap in tmap. In the view-mode this kind of happens automatically. But when I set it to plot-mode I really struggle to get a basemap. Anyone maybe ...
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0answers
154 views

Plot different layers from RasterStack object in R

Is there any way to automatically plot each layer from a RasterStack in R. I'm a little bit lost in the vast amount of options. There is tmap, mapview and also leaflet... For example if you have a ...
2
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1answer
96 views

Styling plot items by category in QGIS print layout

I am making a sensitivity atlas which gives me gridded sensitivity values (A to E) for a given area. I am using the atlas functionality in QGIS 3.10 to create several maps showing these sensitivity ...
2
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0answers
36 views

Change the colors of the pie chart in compouse (plot) in QGIS 3.10

When using the new plot command available in QGIS 3.10 for compouse pie chart generation, I didn't find any option to change colors. Is there any way to choose colors?
2
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1answer
58 views

How to highlight/shade areas of raster based on specific values, in R

I have a raster with values ranging from 1 to 5 like the following: library(raster) library(rasterVis) library(viridis) my_class <- raster(x=matrix(sample(x = 1:5, size = 12, replace=TRUE),4,3), ...
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2answers
44 views

QGIS 3.6 - Deleted Polygons

I'm putting together a large map consisting of some big datasets, and unfortunately deleted some (around 25) polygons from a key layer when editing a smaller version of the map for a different request....
2
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1answer
41 views

Automatic method for placing values of determined column from a SpatialLinesDataFrame near contour lines

I have following vector layer that represents countour lines. With QGIS 3, labels placed near lines (Layer Properties -> Labels) were taken from TEMP_ENE field in attributes table. I would like a ...
2
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1answer
365 views

Plotting density map of points?

I have some points and I would like to plot the density map of them. I have tried like this: plt.figure() xedges = np.linspace(540000, 550000, 20) yedges = np.linspace(5200000, 5500000, 20) H, ...
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3answers
151 views

Plotting map locations from csv-file

I have a map of a city and a .csv-file containing 700 geographic coordinates pointing to locations within that city. How can I plot these 700 locations on the map?
3
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1answer
473 views

Counting number of points in each grid?

I would like to count the number of points in each cell. I have tried https://docs.scipy.org/doc/numpy/reference/generated/numpy.histogram2d.html but the out isn't appropriate. Does anybody know how I ...
2
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0answers
386 views

Change size to the squares of the confusion matrix [closed]

I have a problem with size in the 'plot_confusion_matrix', the squares of the confusion matrix appear cut off. I would like to solve this problem. svc = SVC(kernel='linear',C=1,probability=True) svc....
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0answers
150 views

How to change the color of an specific area of a shapefile using Python?

I have this map and I need to emphasize with a different color some cities from this map: This is my code: import matplotlib.pyplot as plt import json import time import geopandas as gpd from ...
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0answers
45 views

ArcGIS Python API Plotting ValueError: setting an array element with a sequence

Got a pandas spatial df using ArcGIS python API. The data is read in via pd.DataFrame.spatial.from_featureclass()–i.e., a shapefile. Once loaded, df has a SHAPE column, as you see here. Next, ...
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1answer
1k views

Adding legend title in plot function of R

I use plot function to plot a raster in R. The plot function adds a legend as default. However, the default legend added does not have a title. For instance I need to add the unit such as meters. I ...
0
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1answer
298 views

Making raster histogram excluding zeros in R?

In R, can I make a histogram of all the non-zero values in my raster? Some reproducible data below. I just want the histogram to be made with the zeros. Happy with a way to do that, or I guess to ...
0
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1answer
34 views

Unable to plot in R some locations over a shapefile

I have a shapefile of polygons that I got from here, and a CSV file with longitude, latitude data (i.e. lon= -71.4; lat=42.5). The shapefile has the following CRS information: "+proj=lcc +lat_1=41....
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0answers
37 views

Plotting with QGIS, blank positions result in errors

I tried to use the delimited text layers, then I found something wrong. Several plots are out of bound. Then I checked the original data and decoded data. It seems when one part of a single data is ...
1
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1answer
294 views

Creating PNG images using QGIS 3 pygis

Some days ago I upgraded from QGIS 2.18 to 3.6.0 - not knowing that many Python scripts won't run without modifications. I could convert all of them but not this one: from PyQt4.QtCore import * from ...
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1answer
43 views

QGIS transparent layers plot as solid opaque - solution? [closed]

I have been trying to plot from QGIS to a HP Designjet T120 plotter using Win10x64, but the transparent layers of my QGIS project appear as solid opaque on the plot. If I plot to PDF to transparent ...
3
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1answer
76 views

How might one optimise geospatial operations on complex polygons, especially plots in R?

Question: I'm attempting to run some simple plots on some shapefiles with a high number of complex polygons. These aren't massive files - for the example below, the shapefile is 70mb (15872 obs), but ...
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2answers
3k views

How to use st_buffer?

I would like to calculate a buffer of 5km around country polygons. However, I somehow always get a warning and an error. Here is a reproducible example code. library(sp) library(sf) library(tmap) ...
2
votes
1answer
219 views

Expand plotting area of raster::plot

I have a raster that I'd like to plot in the Azimuthal Equidistant projection with a grid and labels. So far I've been able to do that. However, I cannot get the labels inside the plotting area. ...
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0answers
147 views

Multipanel with raster (spplot) and scatter plot in R

I have one raster and one scatter plot that I want to put together in a single multipanel plot. However, the par(mfrow=c()) that usually works to put together different normal plots, it doesn't work ...
1
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1answer
175 views

Extract a list areas and indices of multi-part polygons (SpatialPolygonsDataframe) R

I'd like to extract a list of polygons from a SpatialPolygonsDataFrame that include more than one area (so a polygon with a hole for example, or just 2 areas in one polygon entry in general). There ...
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1answer
103 views

Plot a series of subsetted pixels from a raster stack in R

I have created two raster stacks and would like to plot a row or column of pixels through the stack, but am not sure how to approach this. I know I can subset by layer, but how do I subset ...
0
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1answer
512 views

Legend Key for discrete values in spplot

I have a shapefile with various attributes. I want to plot the shapefile using `spplot'. I first read the shapefile A <- readOGR('myshapefile.shp') I am using the following command: p <- ...
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1answer
611 views

Adding labels to raster with levelplot and spplot

I am trying to add district labels for a country, which I am plotting using levelplot (to use worldclim precipitation data) and adding boundaries using spplot. I am having trouble adding text labels ...
5
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1answer
4k views

How can I superimpose a geopandas dataframe on a raster plot?

I have a geopandas dataframe countries with country polygons, and a raster dataset raster (read with rasterio). I've already aligned the two as follows: countries = countries.to_crs(raster.crs.data) ...
2
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2answers
2k views

Remove internal boundaries in spatial object/polygon for plotting

I am trying to plot a spatial object where only the outer boundaries/borders are plotted. The only way I can think to do this is by manually removing all the lines/points within the spatial object and ...
2
votes
1answer
166 views

How to display multiple plots in R Scripts running in QGIS

While plotting in R in QGIS, only the latest plot appears in 'Result viewer'. What do I do to get all the plots done during script running? Here's the code: ##showplots bin_arr <- c("C:/Users/...
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0answers
242 views

Show charts and plots in plugin

I'm creating a plugin to guide a user though a GIS analysis process. One of the things the user wants is the ability to display "charts" of the resulting data sets. I'm looking to build simple ...
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0answers
270 views

Invert the legend scale representation [in R environment]

Through the following code, cols <- (heat.colors(255)) plot(raster_sum3, col=cols[round(seq(1,255,length.out=10))], legend=TRUE) # raster of the study area plot(site_3003, add=TRUE) # site ...
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0answers
439 views

QGIS: How to plot a GPS track color-coded by the altitude (or any other value like speed, …)?

I have GPX files recorded from various treks. I want to plot them on a QGIS map and have the color of each track segment modified by the altitude recorded. An idea of the result I am looking for is ...
2
votes
2answers
156 views

Hacking QGIS plugin Midvatten to allow capacity explanation label on stratigraphy plot?

I have been trying to make a local addition to the python code for QGIS plugin Midvatten to allow labels on the stratigraphy plot that give the capacity explanation rather than the capacity value. In ...
1
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2answers
3k views

Categorical Legend raster plot - R

I have the following RasterLayer containing categorical values for each pixel. I am using the following code to plot it par(xpd)=FALSE plot(LC, legend=FALSE, col=c("lightcyan3","royalblue","...