Wednesday, April 11, 2018

Code snippet: Get DateTime from UTC timestamp in ArcGIS Online

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 ArcGIS Online stores all date values in UTC.  A short snippet to convert UTC timestamp to DateTime using Python.

      from datetime import datetime

      utcTimeStamp = 1472218452855

      date = datetime.fromtimestamp(utcTimeStamp / 1e3)

output: 2016-08-26 09:34:12.855000

Thursday, April 5, 2018

Override Default Location of Jupyter Notebook file

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This post is continue of  ArcGIS Pro, Conda, Jupyter Setup post. The default location of Jupter Notebook IronPython (*.ipynb) file is   C:\Program Files\ArcGIS\Pro\bin\Python\envs\arcgispro-py3 - 
               import os
               print (os.getcwd())

To change the default location of Jypyter notebook script file(*ipynb) you need to configure

Tuesday, April 3, 2018

ArcGIS Pro, Conda, Jupyter, and ArcGIS for Python setup

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     B. Installation of Jupyter and ArcGIS for Python API can be done in two ways. 

1.       Using  ArcGIS Pro’s Python Package Manager Graphical User Interface ( uses Conda under the hood)
2.       Using Conda via Python Command Prompt

1. Using ArcGIS Pro's Python Pacakge Manager
 i.    Click About ArcGIS Pro

ii. Select packages you would like to install

Tuesday, February 6, 2018

ArcGIS Server Rest End Point POST parameters for Create Replica for ArcGIS collector

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Post Params list -
  1. replicaName:
  2. layers:
  3. layerQueries:
  4. geometry:
    {"rings": [[[-9074894.9, 3341138.1], [-9045657.8, 3341176.3], [-9045657.8, 3320500.1], [-9074818.5, 3320538.3], [-9074894.9, 3341138.1]]], "spatialReference": {"wkid": 3857}}
  5. geometryType:
  6. inSR:
  7. replicaSR:
  8. transportType:
  9. returnAttachments:
  10. returnAttachmentsDataByUrl:
  11. attachmentsSyncDirection:
  12. async:
  13. syncModel:
  14. dataFormat:
  15. replicaOptions:
  16. f:

Monday, February 5, 2018

Git Workflow- The picture speaks for itself

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Friday, February 2, 2018

[Code snippet] Extract Feature Layer Fields from Map Document (Mxd) using ArcPy

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This code snippet is for getting a list of fields in a feature layer from a map document in ArcPy 10.4.

1:  #Import arcpy mapping library  
2:  import arcpy.mapping;  
4:  # Map doc path  
5:  mxdPath =r"C:\MyMxd.mxd"  
7:  #Open map document  
8:  document = arcpy.mapping.MapDocument(mxdPath)  
10:  #Extract all dataframes inside a map document  
11:  dataFrameList = arcpy.mapping.ListDataFrames(document)  
13:  #Loop through all DF   
14:  for dataFrame in dataFrameList:  
15:  #Extact all layers in a dataframe   
16:    layerList = arcpy.mapping.ListLayers(document, None, dataFrame)  
18:    #Loop through all Layers     
19:    for layer in layerList:  
20:      print ("--" +"--"+layer.dataSource)  
22:      #Extract all fields in a layer   
23:      fieldList = arcpy.ListFields(layer.dataSource, None, None)  
25:      #Loop through and print field properties       
26:      for field in fieldList:  
27:         print(,field.aliasName,field.type,field.length,field.required,field.precision)  

Code Snippet: Read ArcGIS Offline Geodatabase into ArcGIS Runtime in WPF

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Here is an quick code snippet for loading ArcGIS runtime database ( offline database) in .NET in ESRI Runtime version 100. The OverlayFeatureLayers() reads the layers from runtime geodatabase and overlayes on runtime environment map in Web Mercator Projection (EPSG: 3857)

 using System;  
 using System.Collections.Generic;  
 using System.Linq;  
 using System.Text;  
 using System.Threading.Tasks;  
 using System.IO;  
 using System.Runtime.CompilerServices;  
 using System.Windows.Input;  
 using Esri.ArcGISRuntime.Data;  
 using Esri.ArcGISRuntime.Geometry;  
 using Esri.ArcGISRuntime.Location;  
 using Esri.ArcGISRuntime.Mapping;  
 using Esri.ArcGISRuntime.Security;  
 using Esri.ArcGISRuntime.Symbology;  
 using Esri.ArcGISRuntime.Tasks;  
 using Esri.ArcGISRuntime.UI;  
 using ReadRuntimeGeodatabase.CustomViewModelBase;  
 namespace ReadRuntimeGeodatabase  
   public class MapViewModel : ViewModelBase  
     public MapViewModel()  
     private Map _map = new Map(SpatialReference.Create(3857));  
     public Map Map  
       get { return this._map; }  
         if (value != this._map)  
           this._map = value;  
     private async void OverlayFeatureLayers()  
       Basemap basemap = Basemap.CreateStreets();  
       _map.Basemap = basemap;  
       string gdbsPath = @"C:\RuntimeToFileGeodatabase;  
       DirectoryInfo dirInfo = new DirectoryInfo(gdbsPath);  
       String[] files = dirInfo.GetFiles("*.geodatabase").Select(file => file.FullName).ToArray<string>();  
       foreach (var gdbFile in files)  
         // open a geodatabase on the local device  
         var gdb = await Esri.ArcGISRuntime.Data.Geodatabase.OpenAsync(gdbFile);  
         // loop thru all tables in the geodatabase  
         foreach (var table in gdb.GeodatabaseFeatureTables.ToList())  
           table.UseAdvancedSymbology = true;  
           var layer = new FeatureLayer(table);  
           await table.LoadAsync();  
           if (table.LoadStatus == Esri.ArcGISRuntime.LoadStatus.Loaded && table.GeometryType.ToString() != "Unknown")  
             await layer.LoadAsync();  
             if (layer.Name == "River_line")  
               // Defaul renderer comes with geodatabase doesn't show up  
               SimpleRenderer customrenderer = new SimpleRenderer();  
               customrenderer.Symbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Solid, System.Windows.Media.Colors.Black, 2);  
               layer.Renderer = customrenderer;  
               Envelope envelope = layer.FullExtent;  
               _map.InitialViewpoint = new Viewpoint(envelope);  
             else {  
               if (table.GeometryType.ToString() == "Polyline")  
                 SimpleRenderer customrenderer = new SimpleRenderer();  
                 customrenderer.Symbol = new SimpleLineSymbol(SimpleLineSymbolStyle.Dash, System.Windows.Media.Colors.Green, 2);  
                 layer.Renderer = customrenderer;  
             System.Diagnostics.Debug.WriteLine(layer.LoadStatus + "---" + layer.Name + "--" + layer.FullExtent + "--" + table.GeometryType + "--" + layer.IsVisibleAtScale(100) + "--" + layer.IsVisible + "--" + layer.MaxScale + "--" + layer.MinScale);  
             if (layer.LoadStatus == Esri.ArcGISRuntime.LoadStatus.Loaded)  
             System.Diagnostics.Debug.WriteLine("No Geom -->" + table.TableName);  

Git SSL certificate problem: self signed certificate [Solution]

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git clone https://......./data.git

throws ssl error resembling to following:
Cloning into 'data'...
fatal: unable to access 'https://*/data.git/': SSL certificate problem: self signed certificate in certifica                                                       te chain

Solution - disable sslVerify and clone it

git -c http.sslVerify=false clone https://......./data.git

Monday, October 23, 2017

Upgrade or Install Python PIP in ArcGIS Desktop 10.4.1

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ArcGIS  Desktop 10.4.1’s default pip, C:\Program Files (x86)\Python27\ArcGIS10.4\Scripts  failed to install the packages throwing following error –

Fatal error in launcher: Unable to create process using '"C:\Python27\ArcGIS10.4
\python.exe" "C:\Python27\ArcGISx6410.4\Scripts\pip.exe" 
The following steps to make the pip to work

Step 1. Open command terminal as Administrator and see if pip works
      Make sure 
            C:\Program Files (x86)\Python27\ArcGIS10.4\Lib;
            C:\Program Files (x86)\Python27\ArcGIS10.4\Scripts;

            C:\Program Files (x86)\Python27\ArcGIS10.4
      are in path            
           pip install <package_name> , no luck [ You can Jump directly to #4]
Step 2. Check the pip version
            pip --version
            (pip9.0.1 as of today)

Step 3. Try to upgrade pip

            pip install --upgrade pip

            The command run successfully, but did not upgrade pip. Every time terminal complains –
You are using pip version 7.0.1, however version 9.0.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.

Step 4. Installing pip from beginning although it ships automatically in Python 2.7 ( Arcgis 10.)
To install pip, securely download
Then run the following:

python --trusted-host ( if SSL certification error occurs)

Step 5. Check pip version

pip --version

pip 9.0.1 from C:\Python27\ArcGIS10.4\lib\site-packages (python 2.7)
( You should have latest version of pip)

Step 6. Now use pip to install packages

pip install <package_name> --trusted-host


Monday, September 18, 2017

Descriptions of the Gradle build structure

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Descriptions of the build gradle file’s parts

Build Java code

apply plugin: ‘java’
apply plugin: ‘war’

This task compiles, tests, and assembles the code into a JAR or WAR file, 
when you run - gradle build

Specify project folder structure


Build with Gradle Wrapper

task wrapper(type: Wrapper) {
    gradleVersion = '2.7'

The Gradle Wrapper is the preferred way of starting a Gradle build. It consists of a batch 
script for Windows and a shell script for OS X and Linux. These scripts allow you to run 
a Gradle build without requiring that Gradle be installed on your system.

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