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| 1 | +{ |
| 2 | + "cells": [ |
| 3 | + { |
| 4 | + "cell_type": "markdown", |
| 5 | + "metadata": { |
| 6 | + "slideshow": { |
| 7 | + "slide_type": "slide" |
| 8 | + } |
| 9 | + }, |
| 10 | + "source": [ |
| 11 | + "# `arcgis` package architecture\n", |
| 12 | + "" |
| 13 | + ] |
| 14 | + }, |
| 15 | + { |
| 16 | + "cell_type": "markdown", |
| 17 | + "metadata": { |
| 18 | + "slideshow": { |
| 19 | + "slide_type": "slide" |
| 20 | + } |
| 21 | + }, |
| 22 | + "source": [ |
| 23 | + "# Introduction to the `features` module\n", |
| 24 | + "\n", |
| 25 | + " Feature\n", |
| 26 | + " FeatureSet\n", |
| 27 | + " FeatureLayer / FeatureCollection\n", |
| 28 | + " FeatureLayerCollection" |
| 29 | + ] |
| 30 | + }, |
| 31 | + { |
| 32 | + "cell_type": "markdown", |
| 33 | + "metadata": { |
| 34 | + "slideshow": { |
| 35 | + "slide_type": "slide" |
| 36 | + } |
| 37 | + }, |
| 38 | + "source": [ |
| 39 | + "" |
| 40 | + ] |
| 41 | + }, |
| 42 | + { |
| 43 | + "cell_type": "markdown", |
| 44 | + "metadata": { |
| 45 | + "slideshow": { |
| 46 | + "slide_type": "slide" |
| 47 | + } |
| 48 | + }, |
| 49 | + "source": [ |
| 50 | + "Fortune 500 company example\n", |
| 51 | + " - Each company (single point in space) = `Feature` object.\n", |
| 52 | + " - All East-coast companies profit > 5B = `FeatureSet`. A `FeatureSet` is a collection of `Feature` objects.\n", |
| 53 | + " - When published as a feature service on your GIS. That layer is a `FeatureLayer`.\n", |
| 54 | + " - The collection of all layers in the feature service is read as a `FeatureLayerCollection` object.\n", |
| 55 | + " - Alternate to `FeatureLayer` - can store as lightweight item = `FeatureCollection`.\n", |
| 56 | + " - `FeatureCollection` is a `FeatureSet` + `layerDefinition` info" |
| 57 | + ] |
| 58 | + }, |
| 59 | + { |
| 60 | + "cell_type": "markdown", |
| 61 | + "metadata": {}, |
| 62 | + "source": [ |
| 63 | + "On your enterprise, your feature data live either as a `FeatureLayer` or `FeatureCollection` which can also be an item without a feature service. The latter has a size limit though" |
| 64 | + ] |
| 65 | + }, |
| 66 | + { |
| 67 | + "cell_type": "markdown", |
| 68 | + "metadata": { |
| 69 | + "slideshow": { |
| 70 | + "slide_type": "slide" |
| 71 | + } |
| 72 | + }, |
| 73 | + "source": [ |
| 74 | + " - `Item` object in your enterprise. Eg: fortune_500_2017\n", |
| 75 | + " - `Item.layers` property will give either a \n", |
| 76 | + " - list of [`FeatureLayer`] objects\n", |
| 77 | + " - or a [`FeatureCollection`] object\n", |
| 78 | + " \n", |
| 79 | + " - call the `query()` method on either a `FeatureLayer` or `FeatureCollection` you get\n", |
| 80 | + " - `FeatureSet`\n", |
| 81 | + " - `features` property of `FeatureSet` gives a list of `[Feature]` objects" |
| 82 | + ] |
| 83 | + }, |
| 84 | + { |
| 85 | + "cell_type": "markdown", |
| 86 | + "metadata": { |
| 87 | + "slideshow": { |
| 88 | + "slide_type": "slide" |
| 89 | + } |
| 90 | + }, |
| 91 | + "source": [ |
| 92 | + "### Where to use what?\n", |
| 93 | + " - `Feature` - smallest entity. Cannot draw a single feature object.\n", |
| 94 | + " - `geometry`, `attributes`, `fields`\n", |
| 95 | + " \n", |
| 96 | + " \n", |
| 97 | + " - `FeatureSet` - inputs to GP, can be drawn on map widget\n", |
| 98 | + " - `df`, `spatial_reference`, `features`, `fields`\n", |
| 99 | + " \n", |
| 100 | + " \n", |
| 101 | + " - `FeatureCollection` - items in GIS, input to GP, output from GP\n", |
| 102 | + " - `query()` [does not support where clause]\n", |
| 103 | + " \n", |
| 104 | + " \n", |
| 105 | + " - `FeatureLayer` - through individual layers of a feature services.\n", |
| 106 | + " - `query()` [supports where clause], `attachments`\n", |
| 107 | + " - `manager`, `edit_features()`, `calculate()`, `query_related_records()`\n", |
| 108 | + " \n", |
| 109 | + " \n", |
| 110 | + " - `FeatureLayerCollection` - through publishing as feature services" |
| 111 | + ] |
| 112 | + } |
| 113 | + ], |
| 114 | + "metadata": { |
| 115 | + "kernelspec": { |
| 116 | + "display_name": "Python 3", |
| 117 | + "language": "python", |
| 118 | + "name": "python3" |
| 119 | + }, |
| 120 | + "language_info": { |
| 121 | + "codemirror_mode": { |
| 122 | + "name": "ipython", |
| 123 | + "version": 3 |
| 124 | + }, |
| 125 | + "file_extension": ".py", |
| 126 | + "mimetype": "text/x-python", |
| 127 | + "name": "python", |
| 128 | + "nbconvert_exporter": "python", |
| 129 | + "pygments_lexer": "ipython3", |
| 130 | + "version": "3.5.3" |
| 131 | + } |
| 132 | + }, |
| 133 | + "nbformat": 4, |
| 134 | + "nbformat_minor": 1 |
| 135 | +} |
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