rgeo | Geospatial data library for Ruby | Map library

by rgeo Ruby Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | rgeo Summary

rgeo is a Ruby library typically used in Geo, Map applications. rgeo has no bugs, it has no vulnerabilities and it has medium support. However rgeo has a Non-SPDX License. You can download it from GitHub.

RGeo is a key component for writing location-aware applications in the Ruby programming language. At its core is an implementation of the industry standard OGC Simple Features Specification, which provides data representations of geometric objects such as points, lines, and polygons, along with a set of geometric analysis operations. This makes it ideal for modeling geolocation data. It also supports a suite of optional add-on modules that provide various geolocation-related services.

Support

Quality

Security

License

Reuse

Support

rgeo has a medium active ecosystem.

It has 926 star(s) with 148 fork(s). There are 37 watchers for this library.

It had no major release in the last 6 months.

There are 34 open issues and 128 have been closed. On average issues are closed in 1251 days. There are 8 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of rgeo is current.

Quality

rgeo has 0 bugs and 0 code smells.

Security

rgeo has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

rgeo code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

rgeo has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

rgeo releases are not available. You will need to build from source code and install.

Installation instructions, examples and code snippets are available.

rgeo saves you 5976 person hours of effort in developing the same functionality from scratch.

It has 14316 lines of code, 1704 functions and 158 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

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rgeo Key Features

No Key Features are available at this moment for rgeo.

rgeo Examples and Code Snippets

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Community Discussions

Trending Discussions on rgeo

georeference png to a shapefile in R

Updating pickerInput based on radiobutton

Plot spatial polygon on worldmap and extract the coordinates within it (R)

Is there a way in R to distribute geocoordinates around a starting point?

Points not added to the map plot

How to extract random coordinates from some place keeping its own geometric form?

Why can I not get worldclim data (avg temp and prec) for the state which I live at all using R?

How show some points on a map in R

Shiny R clearMarkers() within two observeEvents

addLegendImage user selection

QUESTION

georeference png to a shapefile in R

Asked 2022-Mar-02 at 12:13

New to GIS, apologies if this is basic. I have a png of a radio signal strength map:

I want to extract county-level data on average signal strength in China.

I can load a shapefile of Chinese counties and can create a raster file of signal strength, but I don't know how to link the two so I can get the signal strength in each county. I have to do this to thousands of pngs. Thank you!

...

ANSWER

Answered 2022-Mar-02 at 12:13

This is how you can georeference the image

Source https://stackoverflow.com/questions/71318233

QUESTION

Updating pickerInput based on radiobutton

Asked 2022-Feb-26 at 13:08

I want to be able to update the selection available in the pickerInput based upon the selection made in the radio button input. In the example below, I want the radio button "A", to give a pickerInput list of mtcars$cyl, whilst a picker input of "B" to give a picker input of mtcars$mpg

I have tried doing this using if statements, but I haven't got anywhere so far. Reproducible example below:

...

ANSWER

Answered 2022-Feb-26 at 12:09

The server has to listen to the right UI Element (ID = "type" for the radio buttons in question). Currently it observes an undefined element "dist".

Try changing

Source https://stackoverflow.com/questions/71275790

QUESTION

Plot spatial polygon on worldmap and extract the coordinates within it (R)

Asked 2022-Jan-29 at 22:59

Given a set of coordinates with worldwide distribution, I would like to plot a polygon (preferably a rectangle) on a worldmap and then extract all the coordinates that fall within these plots. The location of the polygon would be placed manually based on point density but their size has to remain constant.

Here, I provide a minimal reproducible example of points randomly distributed across Europe. I also add an orientative image that hopefully helps to understand the desired output. First, I would like to add the polygon on the map and then extract all points within that area. Thanks for any possible help in advance.

...

ANSWER

Answered 2022-Jan-29 at 22:57

You can convert the objects to sf, then use st_intersection to extract the points for a given polygon. First, I create a bounding box (this is where you would enter your coordinates for the polygon extent that you want). Then, I convert the europe_land to an sf object. Then, I use st_intersection to return only the points that fall within the polygon.

Source https://stackoverflow.com/questions/70909281

QUESTION

Is there a way in R to distribute geocoordinates around a starting point?

Asked 2022-Jan-27 at 16:34

Hey Guys for my Bachelor Thesis I'm looking for a method to distribute geocoordinates around a starting point.

I want to generate the address data of 100 employees of a fictitious company.The company location is the starting point. Then I want to distribute the addresses/coordinates around the starting point after static surveys for the distance from the employee to the employer in Germany.

The distributions are for example: under 5km : 26.6% 5-10km: 21.7% 10 - 25km: 29.1%

So I want to distribute 26.6% of the employees in a 5km radius, randomly, around my company location of (49.0,12.1).

and so on...

Is there a method/package for this?

So far I use rgeo, but there, as far as I know, I can distribute coordinates only within a fixed boundary, but not around a starting point.

...

ANSWER

Answered 2022-Jan-27 at 16:34

Assuming cp is company starting point, then something like:

Source https://stackoverflow.com/questions/70881856

QUESTION

Points not added to the map plot

Asked 2022-Jan-08 at 13:26

I need to add some points to the map using simple points function. The issue is that points don't add to the map. It's simple command, I follow some tutorial where adding points to the map works this way but not in my case. Plot function plots Texas choropleth properly but next line (points) doesn't add points to the map at all:

...

ANSWER

Answered 2022-Jan-08 at 13:26

First you shoud start to avoid rgeos/rgdal because they will stop being maintains. See : https://github.com/r-spatial/evolution

sf is replacing them:

Source https://stackoverflow.com/questions/70631517

QUESTION

How to extract random coordinates from some place keeping its own geometric form?

Asked 2022-Jan-07 at 00:19

I'd like to get random coordinates into the red bounded area:

The code below is what I've tried so far but I'm not sure if this does what it is supposed to do since this is a mix of a few codes and I've never seen a code which samples random coordinates into an original geometry of a such location.

...

ANSWER

Answered 2022-Jan-07 at 00:16

Please find one possible approach using the sf library

Code

Source https://stackoverflow.com/questions/70602267

QUESTION

Why can I not get worldclim data (avg temp and prec) for the state which I live at all using R?

Asked 2022-Jan-05 at 00:01

I'd like to get the average temperature and precipitation for the state of Ceara in Brazil; I made a cropped area on the map as:

and I used the center lat/lon as lat=-5.49839 and lon=-39.32062 I got the caps of latitude and longitude as latinicial=-7.24614 (minimum latitude), latfinal=-3.76140 (maximum latitude), longinicial=-40.38084 (minimum longitude) and longfinal=-38.77385 (maximum longitude) then I've simulated a uniformly distributed temperature for both latitude and longitude which lies in their maxima and minima.

My code is given as follows:

...

ANSWER

Answered 2022-Jan-04 at 22:27

The problem is with the order of longitude and latitude in coords. When you put coords into SpatialPoints, it expects the order to be longitude then latitude, but you have it reversed. Once you fix that, then it will extract the data correctly. All the code above coord works fine. Also, if you are going to run this code multiple times, then I would recommend using set.seed. This will allow you to get the same values every time when you run the runif statements.

Source https://stackoverflow.com/questions/70585506

QUESTION

How show some points on a map in R

Asked 2021-Dec-25 at 20:19

I used this code in R in order to show a map.

...

ANSWER

Answered 2021-Dec-25 at 20:19

I would propose a simple approach with geom_sf to deal with coordinate data. For more functionality see package sf. Country data from rnaturalearth.

Source https://stackoverflow.com/questions/70481220

QUESTION

Shiny R clearMarkers() within two observeEvents

Asked 2021-Dec-15 at 09:16

How can I add two clearMarkers in two different observeEvent?

Below is a reproducible example. The app plots two different sets of points based on a reactive function. Reaction comes from the selection of input_gr_letter. I want that if a user selects alpha and both A and C the app shows both A and C. As it is now only one of the two will be plotted because of the clearMarkers() element.

I have tried things like clearMarkers(data_point()) and clearMarkers(data_point2()).

I could put both in the same observeEvent as follows but I really want to keep them in two different observeEvent. Any idea?

...

ANSWER

Answered 2021-Dec-15 at 09:16

Two options here :

Use groups : define a group in addMarkers and then clear this group
Use layerId : define an ID column in your data (one unique ID per row), define layerId = ID in addMarkers, and then user removeMarker(ID) to remove the markers you want.

I think the first option is more adapted to your situation, but it is good to know about the second too.

Code for option with groups :

Source https://stackoverflow.com/questions/70347264

QUESTION

addLegendImage user selection

Asked 2021-Dec-08 at 19:00

I am constructing a shiny app. The app displays a few GPS points on a map. Each point has a type and each type displays a different icon (or image).

I want to display a legend (a reactive legend) that appears only if the user selects something from the menu input_gr_letter with the relevant icon (or image) and label for that selection.

Problem: I am neither able to make the legend appear only is a use selects something from input_gr_letter nor am I able to show only in the legend what has been selected in input_gr_letter.

Below is a reproductible example & images describing the current/expected behavior:

...

ANSWER

Answered 2021-Dec-08 at 19:00

library(shiny)
library(shinyWidgets)
library(leaflet)
library(leaflegend)
library(dplyr)
library(sp)
library(raster)
library(rgdal)
library(rgeos)
points <- c("A", "A", "B", "B")
lat <- c(9,10,11,10)
lon <- c(11,10,2,12)
type <- c(alpha= "alpha",beta = "beta",theta = "theta",gamma = "gamma")

df <- data.frame(points,lat,lon,type)

coordinates(df)<-~lat+lon
proj4string(df) <- CRS("+proj=longlat +datum=WGS84 +no_defs")

ui <- bootstrapPage(
    tags$style(type = "text/css", "html, body {width:100%;height:100%}"),
    leafletOutput("map1", width = "100%", height = "100%"),
    absolutePanel(left = 10, bottom = 10, draggable = TRUE, 
                  selectInput(inputId = "input_letter", label = "Select Letter",
                              choices = c("A","B")),
                  selectInput(inputId = "input_gr_letter", label = "Select Gr Letter",
                              choices = c("alpha","beta","theta","gamma"),
                              multiple = TRUE)
    ))  

# List of Icons
listofIcons <- iconList(
    alpha = makeIcon(iconUrl = "https://img.icons8.com/emoji/48/000000/yellow-circle-emoji.png", iconWidth = 10, iconHeight = 10),
    beta = makeIcon(iconUrl = "https://img.icons8.com/emoji/48/000000/orange-circle-emoji.png", iconWidth = 10, iconHeight = 10),
    theta = makeIcon(iconUrl = "https://img.icons8.com/emoji/48/000000/purple-circle-emoji.png", iconWidth = 10, iconHeight = 10),
    gamma = makeIcon(iconUrl = "https://img.icons8.com/emoji/48/000000/red-circle-emoji.png", iconWidth = 10, iconHeight = 10)
)


server <- function(input, output, session) {
    
    # Create the map
    output$map1 <- renderLeaflet({
        leaflet(
            option = leafletOptions(attributionControl=FALSE)) %>%
            addTiles() 
    })
    
    data_point <- reactive({
        df[df@data$points == input$input_letter & df@data$type %in% input$input_gr_letter,]
    })
    
    
    # Reactive Map ---------------------------------
    imgs <- c(alpha = "https://img.icons8.com/emoji/48/000000/yellow-circle-emoji.png",
              beta =  "https://img.icons8.com/emoji/48/000000/orange-circle-emoji.png",
              theta = "https://img.icons8.com/emoji/48/000000/purple-circle-emoji.png",
              gamma = "https://img.icons8.com/emoji/48/000000/red-circle-emoji.png")
    observeEvent(list(input$input_letter, input$input_gr_letter), {
        if(is.null(input$input_gr_letter)) return(leafletProxy("map1") %>% removeControl("legend"))
        leafletProxy("map1") %>%
            addMarkers(data = data_point(),
                       icon = ~listofIcons[type]) %>%
            removeControl("legend") %>% 
            addLegendImage(images = imgs[input$input_gr_letter],
                           labels = type[input$input_gr_letter], layerId = "legend")
    }, ignoreInit = T)
}

shinyApp(ui, server)

Source https://stackoverflow.com/questions/70274198

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install rgeo

Install the RGeo gem:.

Support

RDoc Documentation is available at https://www.rubydoc.info/gems/rgeo. Contributions are welcome. Please read the Contributing guidelines. Support may be available on the rgeo-users google group or on Stack Overflow.

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