USNG Web Map v1.0.1

A library for creating a specific Leaflet-based map for the state of Iowa. The map application allows users to select via interactive map the state's repository of print maps.

View Example

---

• Clone repository
• Copy /example to your favorite server
• Open index.html

Installation

---

• Copy dist folder contents into root of website
• Replace contents of data as required, keeping filenames. Required files:
  • state.json - boundary of Iowa, JSON
  • usng_10k.json - USNG 10k JSON
  • usng_1k.json - USNG Mapbook JSON
• Make any required changes to config.json
• Include these files in HTML :

<link rel="stylesheet" href="path/to/usng-web-map.css">
<script src="path/to/usng-web-map.js"></script> 

• Initialize the web map on your chosen div by adding this javascript to your code:

usng_map.create({
    mapID: "map" // the ID of the div
});

Options

---

Altering config.json allows for modification of certain app settings like: map extent, layer data sources, and path colors

General

• map_extent: lat/lng bounds for zoom extent button
• basemap: refers to the ESRI basemap that will be displayed

Layer Settings

• dataLocation: (String) location of GeoJSON feature data, for display on the map
• mapbookLocation: (String) location of mapbook directory for download
• showLabels: (boolean) whether or not to show labels on the map for the displayed features
• labelPropertyName: (String) the property in the GeoJSON that should be used to label the feature (e.g. 10k maps should use the GRID_10K property in the data file to name each 10k feature)
• color: the layer's path stroke color

Custom Build

---

If you need to make changes beyond what's in config.json (like editing the source code), you can make a custom build of the app. To create a custom build, you'll need to use Node, which will perform tasks like: concatenating and minifying dependencies, and converting stylesheets.

Requirements:

• Node.js

Steps:

• Copy entire repository
• npm install within directory
• Make changes to src
• grunt to build