kandi X-RAY | cartodb Summary
kandi X-RAY | cartodb Summary
CARTO is an open, powerful, and intuitive platform for discovering and predicting the key insights underlying the location data in our world. Empower organizations to optimize operational performance, strategic investments, and everyday decisions with CARTO Engine—our embeddable platform for web and mobile apps—and the new CARTO Builder, a drag and drop analysis tool. It was built to make it easier for people to tell their stories by providing them with flexible and intuitive ways to create maps and design geospatial applications. CARTO can be installed on your own server and we also offer a hosted service at carto.com.
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Here's my data: https://paste.kodi.tv/omohuzawec
Updated data output from dput: redacted
I'm trying to replicate the following plot:
Here's the code I've used to replicate so far, the only thing I can't figure out is how to remove the NA from the legend....
ANSWERAnswered 2021-Mar-17 at 04:31
addLegend() has an argument
na.label which by default is set to
"NA". From here it seems one can set
na.label = "" to remove the NA label from the legend.
I worked a lot on my data set to make it like following. I know how to plot each latitude and longitude in folium as below. I have no idea how to plot line (Polygone) between each pairs of latitude and longitude of my data set in each row. As we see each row is combination of latitude and longitude.
The code is for showing each point( lat and long) on the map.
Notice: I didn't write this code for the provided DataFrame. it is for a data frame with a column named "start_station_latitude" and other column start_station_longitude....
ANSWERAnswered 2021-Apr-06 at 12:19
I'm not sure I understood your question perfectly. How I understand it, you have a df with three latitudes and three longitudes on every row and you want to draw a line throug these three points. If that is what you mean, you could try this:
I inherited this code of an openlayers map, but I am not able to remove all markers to reset the map and redraw.
I added the
resetMap function at the end of the file:
ANSWERAnswered 2021-Apr-04 at 05:34
The problem was I was adding new layer of markers without deleting old one.
This is the new version of
addCluster function, where first of all I name the cluster, and I remove it (if exists) before adding new one:
I want to trigger some action on clicking the
menuItem. I use
observe here: when I click 'Drivers' item I want some text to be returned in the console. Unfortunately, when I run the app the error comes up: Error in if: argument is of length 0. My
menuItem exists, id is also ok so don't know why this error shows up.
Here is reproducible code (
observe is on the bottom of my code):
ANSWERAnswered 2021-Apr-03 at 16:17
You're wrong. Many other posted solutions to this problem use
tabs as the id of the sidebar menu, but you don't:
I am making some maps in Leaflet in R, and the maps consist of a polygon layer as well as a layer of markers. The polygon usually covers a larger area than the markers, but I want to zoom specifically to the marker area.
I know I can manually specify lat/longs and zoom level, but I don't want to do that because this code will generate a lot of different maps covering different subsets of my dataset (or on different datasets).
Here's a simplified version of the code that generates the map. I don't think this necessarily requires a full reprex to answer the question but can do so if necessary....
ANSWERAnswered 2021-Mar-27 at 11:29
Have you tried
Starting from what you have posted, I would first get the bbox coordinates of your markers:
In continuation to my previous post where this was applied on
map, I am trying to filter a table in R Shiny using Dropdown input: How to build dynamic Leaflet Map in RShiny?
ANSWERAnswered 2021-Mar-21 at 14:42
You need to do two changes.
I am a beginner in Shiny and trying to build a shiny app where a user can select
State location from drop down and then based on those the
long should be plotted on the
I have looked at several SO post like Shiny dropdown menu selection to filter a dataframe and shiny tutorials https://shiny.rstudio.com/tutorial/written-tutorial/lesson6/ but nothing has completely worked to make it dynamic based on dropdown selection.
I have also tried using
reactive() in my latest code attempt which I have posted below.
ANSWERAnswered 2021-Mar-21 at 13:48
Change the server logic to :
starting with shiny apps for sort of first time and getting stuck in this issue:
Error: addCircleMarkers requires non-NULL longitude/latitude values
Where am i suppose to put the data to not get this error?
I have also checked other SO post like: addMarkers requires non-NULL longitude/latitude values in R Shiny
But still not sure what exactly is wrong here....
ANSWERAnswered 2021-Mar-21 at 08:03
The column names are called
Latitude* and in
ui you have to use
leafletOutput instead of
I am creating a
shiny app and trying to get top two fields (Name & location) of the
html popup to have a orange background color.
ANSWERAnswered 2021-Mar-21 at 08:41
You can experiment with HTML code much easier in an online editor, e.g. this one
Based on this example https://travisknocherstats.com/posts/2020-05-18-linked-dt-datatable-with-leaflet-map-in-r-shiny/ it is possible to link DT and leaflet. Selected rows on DT are ploted on leaflet. I've made some modifications to be able to have a map by default ~markers ploted in red, then when the user select a row on DT, the marker on leaflet is highligted in blue.It works fine so far. 1- However, when the row is unselected on the DT the blue highlight still shows. How to solve this problem. 2 - Using the action button ~ Clear table selections ~ remove all the markers blues and reds. However, I just would like to make the blue highlight disapear still keeping my red markers.
my code below with reproducible example. Thank you...
ANSWERAnswered 2021-Feb-04 at 10:32
This solution here works as intended and gets rid of a lot of unnecessary
No vulnerabilities reported
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