choropleth | Choropleth Map of the 2019 Novel Coronavirus Outbreak | Map library
kandi X-RAY | choropleth Summary
kandi X-RAY | choropleth Summary
Visualization of the Novel Coronavirus outbreak in Wuhan, China. Demo here. Compared with other existing visualization projects for nCoV-2019, nCoVis Choropleth collects and visualizes data of prefecture-level cities (instead of provinces), as well as other indicators such as infection density (infections per km²) and infection ratio (%). From July 17 2020, the project will be visualizing global data instead. You can still access the legacy verion (the Chinese prefecture-level cities map) through the link provided in the page.
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Trending Discussions on choropleth
QUESTION
I'm an experienced R user venturing into plotly-r. (I am also new to working with geo data.) I'm trying to build an interactive choropleth and I've been able to get pretty close to what I want with ggplot()
>> ggplotly()
, but I also want to be able to do the same thing starting with plot_ly()
.
I'm having a problem with tooltips. I've been able to set up custom tooltips using the first workflow, but I can't figure out how to do it when starting with plot_ly()
. My code is below. The tooltip shows values from the split
argument to add_sf()
. I want it to show the string contained in the tmp1$text
.
ANSWER
Answered 2022-Mar-26 at 18:36If you would have included a data sample, I'm guessing you would have had an answer within minutes of posting...
You were SO close. You are missing one parameter. In the plotly
call add hoveron = "fills"
QUESTION
Is there a way of displaying images with a geoJson mask in Leaflet/another map library? I took "choropleth map of US States" example and I'd like to display a different background image in each state. How can I achieve it?
Here's my code https://jsfiddle.net/d37zg8f9/, as you can see the images overflow from each state. In a perfect world something like that can be achieved by following HTML:
...ANSWER
Answered 2022-Mar-19 at 02:49https://jsfiddle.net/9rzt2uoe/29
You can use the fill
property in CSS to fill SVG paths with SVG patterns.
We need an SVG to hold a bunch of patterns that each contain an image:
QUESTION
I am working on a project where I am using a shape file to make a choropleth map of the United States. To do this, I downloaded the standard shape file here from the US Census Bureau. After a little bit of cleaning up (there were some extraneous island territories which I removed by changing the plot's axis limits), I was able to get the contiguous states to fit neatly within the bounds of the matplotlib figure. For reference, please see Edit 4 below.
Edit 1: I am using the cb_2018_us_state_500k.zip [3.2 MB] shape file.
The only problem now is that by setting axis limits I now am no longer able to view Alaska and Hawaii (as these are obviously cut out by restricting the axis limits). I would now like to add both of these polygons back in my map but now towards the lower part of the plot figure (the treatment that is given by most other maps of this type) despite its geographical inaccuracy.
To put this more concretely, I am interested in selecting the polygon shapes representing Alaska and Hawaii and moving them to the lower left hand side of my figure. Is this something that would be possible?
I can create a Boolean mask using:
...ANSWER
Answered 2021-Sep-22 at 17:25You could do something like this. You will have to find the right offsets to position Alaska where you want it to be exactly.
Now, you have the following dataframe:
QUESTION
I have two geodataframes: One containing sightings of animals of a specific species called bird_df
(with location as points), and the other detailing the boundaries of each municipality within my state called map_df
.
I want to use the geopandas method .contains(x) to count the number of animals that were found in each municipality and add that total to the boundaries dataframe so i can generate a choropleth.
My pandas is a bit rusty but I've tried things like
map_df[map_df["geometry"].contains(bird_df["geometry"]) == True]
I just don't know how to wrap my head around this problem. Some help would be appreciated.
Thanks
...ANSWER
Answered 2022-Mar-05 at 06:11I recommend using an sjoin for this.
QUESTION
Hi I'm currently working with a dataset of new Covid-19 cases per 100k people for every county in the US.
Dataset:
County FIPS Week 1 Week 2 Week 3 Week 4 ... 01001 11.7390 11.7390 13.5299 11.7390 01003 4.5835 9.5110 17.5743 20.2621 01005 0.0000 9.1016 33.4078 33.4078 ...I was able to have a Choropleth map that captures any single week. In this case, week 4.
...ANSWER
Answered 2022-Feb-25 at 07:33The data format needs to be converted to a vertical format instead of a horizontal format. The next step is to add an animation frame in the map settings. Specify the name of the week that will become the slider. Since the data is partial, I narrowed down the range to see if it was working correctly.
QUESTION
I'm trying to plot an interactive map using Geopandas and its explore() method in Colab.
However, when I write:
...ANSWER
Answered 2022-Feb-23 at 21:21The first positional argument to geopandas.GeoDataFrame.explore
is column
:
column: str, np.array, pd.Series (default None)
The name of the dataframe column, numpy.array, or pandas.Series to be plotted. If numpy.array or pandas.Series are used then it must have same length as dataframe.
If you're plotting a dataframe with more than one column, be sure to provide the name of the column you would like to explore, as in:
QUESTION
I'm trying to replicate some functions of the leaflet map https://leafletjs.com/examples/choropleth/ to react/typeScript but I'm getting an error when I try to add the function to zoom on a Feature it breaks, this is the code I'm working on
...ANSWER
Answered 2022-Feb-10 at 18:20useMap
can only be used within a component that is itself a child/descendant of .
https://react-leaflet.js.org/docs/api-map/#usemap
Hook providing the Leaflet Map instance in any descendant of a
MapContainer
.
Here you try calling useMap
in your EmployerLocationMap
component, which contains a , but which is obviously not a descendant of one.
A solution for your case could be to separate the map logic in another component that you can place inside the :
QUESTION
So, I'm trying to show a modal when a marker is clicked as a part of my Leaflet app. I already have some of the click functionality set on my marker layer, but I seem to be failing in triggering the necessary class being added to the modal element.
Currently I have a modal div with the following HTML outside of my map div.:
...ANSWER
Answered 2022-Feb-07 at 03:47The culprit is the line: e.target.getBounds()
When you click on a (Circle)Marker, e.target
is that Marker. But Point features do not have such getBounds()
method (since they represent a single point, not an area).
So your script fails with an error like:
Uncaught TypeError: e.target.getBounds is not a function
...and the rest of the event listener is not executed, in particular the following line where you show your modal (document.getElementById('infoBox').classList.add('is-visible')
)
Since you already set the view around that Marker just before (mymap.fitBounds(markerBounds)
), there is no need to that repeated call (maybe just a leftover of previous attempts?)
Removing that line restores your modal behaviour.
Fixed Plunkr: https://plnkr.co/edit/DfCKrJaNzM48dzuZ
Note: your Plunkr was not working because you forgot the call to your initMap()
function.
QUESTION
In a choropleth graphic map with ggplot2, an element corresponding to the NA values of the variable Cuantil Esfuerzo Social por habitante
is automatically included in the legend
I have tried a few things:
- Using
na.translate = F
inscale_fill_manual()
hides both the "NA" item from the legend and the polygons corresponding to those values. So the map is incomplete. - Another option that I have used (as it appears in the code) is to define a color and a specific label (Sin datos) for the "NA" values to give more meaning to the graph.
There would be two options to build the graph according to the needs:
- Hide in the legend the label of the "NA" values. And add an annotation (
annotate()
) for the "NA" values, with a rectangle and text. - To be able to separate (adding a space) the legend with the quartile intervals and a different one only with the corresponding,
key
andlabel
, to the "NA" values.
Data: https://www.dropbox.com/s/b39pp4qmbhns658/geosmunicipiosmu.R?dl=0
Code:
...ANSWER
Answered 2022-Feb-01 at 07:49I would suggest another alternative option, that consists on plotting a base layer on the desired NA
color and then combine it with a second colorized layer using the na.translate = F
approach. By doing this, the plot would have all the polygons as the base layer and the legend would omit the NA
s. See below your code with these small modifications.
QUESTION
I was able to plot a choropleth map using D3.js version 7, as you can see here. Now I'd like to get an extra external data to complement it. I saw a lot of examples, but I'm kind of stuck now as the majority of examples are from previous versions that just don't work with the latest one no matter what I try.
The most important part of the js code which differs from the original is the following:
...ANSWER
Answered 2022-Jan-09 at 20:34console.log(d.results.tt_nominais) // this is undefined WHY??? <---
You bind geojson to your SVG elements with:
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