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README.md

npm version

leaflet-csvtiles

leaflet-csvtiles is a leaflet plugin that load points from tiled csv files, using the amazing PapaParse library.

This plugin was developed mainly for application with Simple CRS, with different CRS the tiles will always be uniformly spaced in lat and lng (so not uniformly spaced in the map see the demo for the problem visualization)

Demos

L.CRS.Simple demo

L.CRS.EPSG3857 demo (points have no meaning here)

API

Creation

L.csvTiles(url, options, parser)

  • url url template of the csv tiled files.
  • options options object (optional)
  • parser Parser function (default to global Papa.parse) function(url || data, config).

Options

The option that can be passed on creation

  • columns Object:

    • x Integer index of the column that stores the x coordinates in the csv, default to 0. (x coordinates will be mapped to lng)
    • y Integer index of the column that stores the y coordinates in the csv, default to 1. (y coordinates will be mapped to lat).
    • z Integer index of the column that stores the z coordinates (levels/slice/elevation) in the csv, default to undefined. If set to a a positive integer and the Multi Level handler is enabled the points will be displayed only in the appropriate level.
  • size Number or Number[] size of the space covered by the csvTiles.

  • tileSize Number or Number[] size of one tile (same unit as size).

  • scale Number or Number[], scale to apply to the points coordinates.

  • bounds LatLngBounds, (in map coordinates) if provided the scale parameter will be computed to fit the points into the given bounds.

  • localRS boolean, if points are given in local (tile) coordinates in each tile, that is if true it means that in every tile the points coordinates range between (0,0) to tileSize.

  • origin offset of the points coordinates, will be computed automatically if bounds is set.

  • offset offset of the tile indexes.

  • minZoom min zoom at which the layer is shown.

  • grid if a grid showing tiles borders should be plotted.

  • typeOfPoint String one of circleMarker(default), marker, circle.

the following fields are relative to the appropriate type of points used:

  • radius
  • color
  • fillColor
  • weight
  • fillOpacity
  • opacity

the following fields are as in the PapaParse configuration:

  • delimiter
  • newline
  • quoteChar
  • encoding
  • worker

Methods

getReferences(bounds)
  • bounds latLngBounds

    Return a vector of reference objects (see read method).

read(reference, cl)
  • reference Object:

    • col Number
    • row Number
    • x Number
    • y Number
  • cl function cl(point) , point = [lng,lat,level]

Events

LICENSE

The MIT License (MIT)

Copyright (c) 2017 Gherardo Varando (gherardo.varando@gmail.com)

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.