Excel files with ArcGis and ArcGis Pro

There is an increasing co-work between ArcGis and
Excel. Indeed, the information management is infinitely richer with
a spreadsheet such as Excel than with an ArcGis tabular view.
It
has always been possible to load an Excel table in ArcMap. But since
version 10.2 there are two tools that allow you to create an ArcGis table from
Excel and another that allows you to create an Excel table from an ArcGis table.
These tools are also present in ArcGis Pro.

We will discuss how this works.


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ArcGis Pro: spatial joint and entities extrusion

We have already discussed the 2D entities extrusion to create 3D views in the article How to transform your data from 2D to 3D to fully exploit ArcGis Pro 1.0? 2 – With 3D layer towards class entities .
In that article we created a 3D view with ArcScene from the “building” layer of the cadastre by using the property extrusion available in the properties layer window.

We will right here perform the same operation, but with ArcGis Pro. This will let us visualize how the 3D work integrates, without resort to another application simultaneously (ArcMap ArcScene).
 

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How to use Landsat Images ( Free ) with QGis 2.8 for NDVI

In the previous two articles, we have discussed ( How to use Landsat images (free) with ArcGIS (ArcMap) for NDVI , How to use Landsat images (free) with ArcGIS Pro for NDVI ) the calculation and display of NDVI with ArcMap and ArcGis Pro. In this article we will discuss how to achieve this operation with QGis.
To download Landsat images from Earth Explorer, check out this article: How to use Landsat Images ( Free ) in your GIS .

Here we will use the raster calculator to calculate the NDVI , then we will discuss how to create and use a specific colour gradient for this index.
  If you work with a Landsat 7 image, you will load in QGis the bands 3 (red) and 4 (infra-red). If you work with a Landsat 8 image you will load the bands 4 (red) and 5 (infra-red).  

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How to use Landsat Images ( Free ) with ArcGis Pro for NDVI

In the previous article, How to use Landsat Images ( Free ) with ArcGis (ArcMap) for NDVI, we have dealt with the calculation and display of the NDVI index with ArcMap. Here, we will discuss how to achieve the same operation with ArcGis Pro. We will start by using the composite image , created with the tool ” Composite channels ” also directly available at the ArcGis Pro “Geoprocessing” window.   

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How to use Landsat Images ( Free ) with ArcGis (ArcMap) for NDVI

In a previous article,   How to use Landsat images ( free ) in your GIS , we discuss how to download Landsat 7 or 8 images. Now we will discuss how to use them with ArcGis, when you use ArcMap or ArcGis Pro.

We left at the point where you had , in a directory , a series of 8   or 11 tiff images. Each of them corresponds to a satellite band . Landsat 7 images have 8   bands while the Landsat 8 have 11.

For the calculation of the NDVI you will need the band corresponding to the red and the near infra-red:

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ArcGis Pro: the attribute tables management

We will continue discussing those little details worth knowing to be able to switch from working in ArcMap to ArcGis Pro. In ArcMap, you display the attribute table with the right click on the layer in the legend window and open the table , or by clicking on properties -> fields to view and edit the table structure. In ArcGis Pro, just the first part is similar . If you want to work on the structure of the table you must use the following option in the layer menu : “Design” then “Fields” ( or Domains, or Subtypes if you must take action on them ).

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ArcGis Model Builder: Expanding a Model to an Input Dataset

There are always two psychological barriers to overcome with Model Builder:

  • the first one is deciding to, actually, use it and move from the interactive, natural working mode to ArcMap, i.e. to a working mode where all the workflow is performed virtually, before actually launching it
  • the second, when you are, already, comfortable with the tool and start creating increasingly complex models, but always based on an input layer producing an output layer. And then, you think it would be nice to be able to apply the model automatically to a whole batch of input data, and somehow you find out that it is necessary to use “iterators”.
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How to edit OpenStreetMap data with ArcGis

The “ArcGIS Editor for OpenStreetMap” toolkit lets you use ArcGIS tools to work on OpenStreetMap data. This set of tools for ArcGIS 10.X allows you to load OpenStreetMap data and store it in a geodatabase. Afterwards, you can use the ArcGIS Desktop editing environment to create, edit, network scan, or update data. Once editing is completed, you can post changes to OSM to make them available to all OSM users.

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