tilemill | TileMill is a modern map design studio | Map library

 by   tilemill-project JavaScript Version: v1.1.0 License: BSD-3-Clause

kandi X-RAY | tilemill Summary

kandi X-RAY | tilemill Summary

tilemill is a JavaScript library typically used in Geo, Map applications. tilemill has no bugs, it has no vulnerabilities, it has a Permissive License and it has medium support. You can download it from GitHub.

TileMill is a modern map design studio

            kandi-support Support

              tilemill has a medium active ecosystem.
              It has 3039 star(s) with 527 fork(s). There are 164 watchers for this library.
              It had no major release in the last 12 months.
              There are 405 open issues and 2116 have been closed. On average issues are closed in 699 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of tilemill is v1.1.0

            kandi-Quality Quality

              tilemill has 0 bugs and 1 code smells.

            kandi-Security Security

              tilemill has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              tilemill code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              tilemill is licensed under the BSD-3-Clause License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              tilemill releases are available to install and integrate.
              Installation instructions, examples and code snippets are available.
              tilemill saves you 975 person hours of effort in developing the same functionality from scratch.
              It has 2219 lines of code, 0 functions and 33 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

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            tilemill Key Features

            No Key Features are available at this moment for tilemill.

            tilemill Examples and Code Snippets

            No Code Snippets are available at this moment for tilemill.

            Community Discussions


            Classifying tags in R with grepl in ifelse
            Asked 2018-Sep-20 at 04:25

            I am having an issue with some R code. I am trying to classify text values from a column into a new column. My data is a collection of tags used on the gis.stackexchange site, which has ~2,500 rows. My goal is to classify the tags as either COTS, FOSS, or other. Reviewing the tags there are two "scenarios"; tags that are used once (i.e. anaconda) and tags that have a term used multiple times (i.e. qgis, qgis-desktop, qgis-server, etc.). This scenario is true for both COTS and FOSS tags.

            My approach was to do the following:

            1. create a vector with all tags that represent FOSS
            2. create a vector with all tags that represent COTS
            3. create a new column called software and code using ifelse
            4. ifelse - where the tagName is %in% FOSS then code as FOSS
            5. in the ifelse use grep on the FOSS vector to pattern match tags that may be used multiple times (i.e. qgis) and code as FOSS
            6. Repeat this for COTS

            I am getting an issue where the last grep (COTS) is being coded as FOSS. Obviously there is something wrong, but I cannot seem to figure out the issue. Below is the code and a link to the source data.

            Shared folder with source CSV

            Tag vectors -- FOSS and COTS



            Answered 2018-Sep-19 at 13:19

            Two things. First of all, you need grepl() because of the logical output. Secondly, grepl() does not work with a character vector, therefore you need to collapse it like this "anaconda|android|..." and omit the fixed = TRUE to work.

            This should do it:

            Source https://stackoverflow.com/questions/52406576


            Creating Terrain Map with SRTM HGT File
            Asked 2018-Jan-08 at 17:43

            I am working on an iOS application. Where I show the Elevation and Topography map of a certain area. I have managed to download the .hgt file within app from here.

            So far I am able to extract the Elevation from the hgt file. Now I have to also show the Terrain Map for that area. I have been searching about it and I think I can't create terrain map directly with hgt file within iOS application. I have to use GRASS GIS, SRTM2OSM or TileMill to create terrain map and then use it in application.

            Can please anyone direct me what I can do here and how to proceed.


            I have asked to not to use any kind of map for this. So basically I have to create the map by using core drawing, and I have no idea about it.

            Something Like this without the text:



            Answered 2017-Dec-28 at 09:59

            With iOS you have access to Maps through MapKit framework to display map or satellite imagery directly from your app's interface, you can use also Google Maps through Google Maps SDK for iOS but both (iOS Maps and Google Maps) don't have a terrain level.

            So to avoid to re-create something that already exist you can take a look to the OpenStreetMaps frameworks, here you can find many available frameworks, one of them is called MapBox and you can download the latest sources and example here

            As you can read from wiki pages we have also the terrain level:

            I think it's a really useful library, updated and working with swift 4 , here you can find an easy tutorial to start:

            Source https://stackoverflow.com/questions/47943124


            Using leaflet with large data - ACS data for all counties in U.S
            Asked 2017-May-08 at 20:54

            I'm plotting ACS data (counts of low-income children) for each county across the entire U.S. I don't have any markers, just a county shapefile and 6 values for each county that are in separate layers.

            Unsurprisingly this is too large for browsers to handle. I've seen some similar questions here that deal with clustering, but since I have nothing to cluster I'm starting a new question.

            I've tried breaking it up into 6 regional maps, but even those are too much.

            Is there some way to lower the footprint, but still have all the county specific data?

            I've looked at tilemill and other options for only loading the data the user is currently viewing and based on the zoom level, but I can't find any information on how to go from an R generated leaflet map to something like that. Alternatives using this route are useful as well.



            Answered 2017-May-08 at 20:42

            You can try to simplify the polygons using the rmapshaper package and then try visualising it with mapview. The former will help get rid of 'unnecessary' polygon vertices, while the latter has dedicated functions to enable leaflet rendering of large data (ballpark around 100k features - depending on complexity).

            Source https://stackoverflow.com/questions/43853244


            Generating map tiles (dynamically?) from SQL/CSV data
            Asked 2017-Mar-28 at 11:37

            here's what I have:

            • SQL table/CSV file with "tile XYZ" coordinates (web mercator tile coordinates) and "data/color"

              X Y Z Color 13 13 5 yellow 13 14 5 green 13 14 5 red ...

            • data structure very easy, no fancy stuff needed, I can draw the pngs by code.

            • amount of data is large, i.e. worldwide tiled, say zoomlevel 15

            what I want:

            • png tiles
            • underlying data should not be accessible
            • show the png tiles as a webpage map with help of leaflet/google maps api


            • too much data to generate ALL tiles worldwide before (takes days)
            • I was therefore thinking about a dynamic caching/tile creation algorithm (maybe create zoomlevel 0-9 before, higher zoom levels created dynamically)
            • it seems there are many tools out there (TileMill, TileStache, ArcGIS Server, etc) but all of them seem to have a high learning curve or are meant for more complex tasks.
            • is there a way to run a lean server that exactly fits my needs? Maybe with a php script that queries the database, draws the png and feeds that to the map on-demand? how would that work exactly? What would be a clever solution?

            Thanks so much.



            Answered 2017-Mar-28 at 11:37

            I went through a somewhat similar problem: having the tile indexes, return the points of a table that fell into the corresponding bounding box.


            Since I was using PostgreSQL + PostGIS as a BBDD, I used a function that's defined in Peter Warden's PostGIS2Gmap repo.

            Source https://stackoverflow.com/questions/43067645


            tilemill creates jagged edges for worldmap
            Asked 2017-Mar-21 at 08:56

            Trying to create a custom world map texture with tilemill to load into leafletjs. I have downloaded a free .tiff file from natural earth data and loaded it into tilemill. When i want to export however, i notice alot of jagged edges mainly around greenland/canada on the lowest zoom level.

            a few zoom levels down and it seems ok again. After exporting the tiles to png's the jagged edges stay. How can i improve the quality of these images?



            Answered 2017-Mar-21 at 08:56

            How can i improve the quality of these images?

            By using more detailed input data.

            By the looks of it, you are projecting a raster image in EPSG:4326 projection into the EPSG:3857 "web mercator" projection. In the original data, each pixel spans the same amount of longitude and latitude degrees. In a mercator projection, each pixel spans the same amount of longitude, but a different amount of latitude. The artifacts you are experiencing are akin to a Tissot's indicatrix.

            You can try using a different value for the raster-scaling symbolizer option in your tilemill stylesheet, but that's gonna make the artifacts different, not get rid of them.

            Source https://stackoverflow.com/questions/42922081

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


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            Install tilemill

            Quick installation instructions for OSX:.


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