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ccxzhangccxzhang
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‎.DS_Store

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‎.gitignore

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downloads/
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eggs/
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.eggs/
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lib/
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lib64/
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parts/
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sdist/

‎_config.yml

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theme: jekyll-theme-cayman
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title: GeoSpatial Analysis Collections

‎_includes/.DS_Store

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‎_includes/lib/mathjax.html

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<script src="https://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML" type="text/javascript"></script>

‎_layouts/default.html

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<!DOCTYPE html>
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<html lang="{{ site.lang | default: "en-US" }}">
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<head>
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<meta charset="UTF-8">
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{% seo %}
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<link rel="preconnect" href="https://fonts.gstatic.com">
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<link rel="preload" href="https://fonts.googleapis.com/css?family=Open+Sans:400,700&display=swap" as="style" type="text/css" crossorigin>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="theme-color" content="#157878">
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<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
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<link rel="stylesheet" href="{{ '/assets/css/style.css?v=' | append: site.github.build_revision | relative_url }}">
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{% include head-custom.html %}
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{% include lib/mathjax.html %}
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</head>
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<body>
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<a id="skip-to-content" href="#content">Skip to the content.</a>
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<header class="page-header" role="banner">
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<h1 class="project-name">GeoSpatial Analysis Collections</h1>
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</header>
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<main id="content" class="main-content" role="main">
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{{ content }}
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<footer class="site-footer">
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{% if site.github.is_project_page %}
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<span class="site-footer-owner"> Maintained by Charlie Zhang </span>
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{% endif %}
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</footer>
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</main>
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</body>
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</html>

‎assets/css/style.scss

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---
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---
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@import "{{ site.theme }}";
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.page-header {
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color: $header-heading-color;
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text-align: center;
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background-color: #DE2910;
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background-image: url("data/ccp.png");
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}
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.main-content {
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h1,
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h2,
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h3,
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h4,
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h5,
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h6 {
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margin-top: 2rem;
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margin-bottom: 1rem;
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font-weight: normal;
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color: #041E42;
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}
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}
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body {
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padding: 0;
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margin: 0;
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font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
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font-size: 16px;
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text-align: justify;
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line-height: 1.5;
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color: #191919;
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}
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figcaption {
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color: #191919;
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font-size: 14px;
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font-family: "Open Sans", "Helvetica Neue", Helvetica, Arial, sans-serif;
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font-style: italic;
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padding: 2px;
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text-align: center;
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line-height: normal;
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width: 100%;
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}

‎index.md

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---
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title: Geospatial Analysis
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author: Charlie Zhang
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layout: default
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---
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## Python Packages and APIs
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* [GeoPandas](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.1.geopandas.ipynb) with Contextily
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* [Rasterio/Xarray](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.2.rasterio.ipynb)
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* Google Earth Engine
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* [DMSP](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.3.1.gee_dmsp.ipynb)
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* [LANDSAT](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.3.gee_landsat.ipynb)
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* [OpenStreetMap/OSMNX](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.4.osm.ipynb)
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* [NetworkX](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/other-networkx.ipynb)
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* [H3](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/0.5.h3-py.ipynb)
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## Javascript Scripts and APIs
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* Google Earth Engine
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* [LANDSAT](/js/landsat_ndvi.js)
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* Leaflet
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## Open Data
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* [Google Buildings](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/other-googlebuildings.ipynb)
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* [CenPy for US Census data](https://nbviewer.org/github/ccxzhang/GeoSpatialAnalysis/blob/main/python/other-cenpy.ipynb)

‎js/.DS_Store

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‎js/landsat_ndvi.js

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// Obtain DC's geometry
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var dc = ee.FeatureCollection('TIGER/2018/States')
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.filterMetadata('NAME', 'equals', 'District of Columbia')
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.geometry();
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print(dc);
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var dc_ls = ee.ImageCollection("LANDSAT/LC08/C01/T1_SR")
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.filterDate('2010-01-01', '2021-12-31')
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.filterBounds(dc)
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print(dc_ls);
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// Define a function to create a nvdi band
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var addNVDIBand = function(image) {
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var ndvi = image.normalizedDifference(['B5', 'B4']).rename('NDVI');
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return image.addBands([ndvi]);
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};
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var dcNDVI = dc_ls.map(addNVDIBand).select('NDVI');
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print(dcNDVI.getInfo());
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// Create a chart over time
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var chart =
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ui.Chart.image
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.series({
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imageCollection: dcNDVI,
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region: dc,
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reducer: ee.Reducer.mean(),
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scale: 30,
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xProperty: 'system:time_start'
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})
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.setSeriesNames(['NDVI'])
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.setOptions({
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title: 'NDVI over time',
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hAxis: {title: 'Year', titleTextStyle: {italic: false, bold: true}},
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vAxis: {
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title: 'NDVI',
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titleTextStyle: {italic: false, bold: true}
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},
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lineWidth: 2,
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colors: ['e37d05', '1d6b99'],
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curveType: 'function'
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});
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print(chart);

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