GPS Base Station
Converting GeoPDFs to GeoTIFFs Using GDAL
This blog posting presents an alternative method for transforming USGS Topographic maps from the GeoPDF format into a more GIS-friendly format - the GeoTIFF. Here, we will introduce GDAL, an open-source software program that has been specifically designed for use in reading and writing information to geospatial raster data formats.
Using the Field Calculator to edit Strings in the Attribute Table
The Field Calculator provides GIS users with a powerful way to efficiently edit attribute table field values. It helps to eliminate tedious manual edits through the use of VBA Script Functions and Python Functions. This blog posting will explore some of the common VB Script string functions that can be used in the Field Calculator.
USGS Topographic Maps: Converting GeoPDF to JPEG2000
GeoTIFFs are a high-quality raster storage format that require large amounts of disk space. JPEG2000s provide the same high-quality raster appearance, but require significantly less disk space. This second in the series details how to create seamless basemaps from USGS Topographic GeoPDF's using this more efficient file storage format.
USGS Topographic Maps: Converting GeoPDF to GeoTIFF
Learn to create seamless basemaps from the US Topographic maps in GeoPDF format by converting them into a "GIS-friendly" format such as GeoTIFF all with a basic script and Global Mapper 15.
Customizing US National Grid Maps for Post-Storm Recovery
The U.S. National Grid is a grid-based reference system used in search and rescue operations. Here, we will introduce where to download data for your area, and how to make this data useful in the form of Map Books.
Creating a Mosaic Dataset from Orthophotos
This blog posts builds off of the "Utilizing the Hurricane Sandy Response Imagery Viewer" post, and details how to create a mosaic dataset out of the imagery downloaded from this NOAA operated site.
Part 2: Creating a Multispectral Mosaic Dataset
Building on skills and techniques learned from a previous blog posts: "Part 1: Create a Pansharpened Image Using ArcGIS", you are ready to take the next step! Stay tuned for the final blog posting of this series and put the pieces of the puzzle together to create a high-quality end product.
Part 1: Creating a Panchromatic Mosaic Dataset
Many factors influence how panchromatic images look after they have been collected, such as cloud cover and the amount of water area present. This workflow will walk you through how to create a high-quality panchromatic mosaic dataset using Quickbird Imagery.
Recent ArcMap documents stopped being listed…
Have your "Recent" ArcMap documents stopped being listed since you upgraded to ArcMap 10.2.2? This blog post describes how I solved the problem by editing the registry.
Part 3: Create a Pansharpened Image Using ArcGIS
This is the final blog posting in a series and will put together the knowledge and skills gained in Part 1: Creating a Panchromatic Mosaic Dataset and Part 2: Creating a Multispectral Mosaic Dataset. Panchromatic sharpening, more commonly called pansharpening, is a process in which two raster datasets are fused together to create one high-resolution, easy to analyze raster dataset.
Tile Layers - keeping credits low
This workflow uses zero credits when publishing image tiles to ArcGIS Online. Check it out!
How-to: Using our new ArcGIS Online-Hosted Map Services
Copies of two of our most popular map services are now hosted by ArcGIS Online! Here's how to get started working with them.
Image Hosting Options for Map Tour Application
The Story Map Tour Application requires your photo to be accessible via the internet. There are several hosting options - find out more to see which would work best for you.
Placing Pictures on a Map
Your pictures can now have a geographic context of “where.” To make your slideshow standout from all the others you will need: Pictures accessible via the internet and an ArcGIS.com account. With these pieces you can create an application called a Map Tour. Let’s get started!
Editing Shapefiles: ArcGIS Online
Yes, it is possible to work with shapefiles using ArcGIS Online! Here's how to get started.
Where in Rhode Island?
Thanks to the Environmental Data Center's Rhode Island Digital Atlas project, an increasing amount of RIGIS data can be easily viewed as online maps and you don't need to be a GIS expert either.
If I only had a map
Get started creating a map to mark your place in the world and Rhode Island. Getting started with ArcGIS Online viewer.
No Server, No Org account - No Problem.
Your imported shapefiles, .csv files and map notes now have a life outside of your web map.
Crowdsourced Data: ArcGIS Online
ArcGIS Online Map Notes are a great way to collect crowd-sourced information.
Sharing: ArcGIS Online for Organizations
ESRI has made some changes to the ArcGIS Online platform. One is an account name change and another is new account option. The ArcGIS Online personal account is now referred to as a public account. Additionally, a new account option has been created; this is referred to as an organization account. This requires a paid for subscription to ArcGIS Online for Organizations.
Using the National Map Viewer to Download US Topo Maps
This short blog will quickly walk you through downloaded the newest topographic maps for an areas of your choosing from the National Map Viewer. This free download platform provides users with access to free topographic data for the entire country.
Introducing the USGS Coastal Change Hazards Portal
This new viewer from the USGS provides GIS and non-GIS users with important coastal change information for the entire United States. Here, users can search, view, share, save and downloaded a multitude of coastal change data.
NOAA's Hurricane Sandy Response Imagery Viewer
Learn how to quickly access and download post-Sandy imagery data for free.
Obtaining Elevation Data from NOAA Digital Coast
Finding and accessing high quality elevation data can be a challenging process; this blog post will introduce a great way to access these data for free.
Using LAS Datasets to Create Functional Outputs
This blog posting will build on the Obtaining Elevation Data from NOAA Digital Coast blog post and introduce you to working with LiDAR data within the LAS dataset environment. A LAS Dataset is one of the Esri storage methods for LiDAR data in the LAS file format. Here we will explore creating two of the most basic outputs, the Digital Elevation Model and the Hillshade Model.
Mosaic Datasets and LiDAR Data: Advanced Processing
Building on the last LiDAR blog post which covered an introduction to using mosaic datasets as a way to manipulate LiDAR data. Here we explore more in-depth processes that can result in useful and versatile products.
Mosaic Datasets and LiDAR Data: An Introduction
In past blog postings we have discussed how mosaic datasets can be a powerful tool when used with imagery data. This blog post will introduce how mosaic datasets can also be a powerful tool to quickly create highly useful and variable products from LiDAR data.
LAS Datasets In ArcGIS 10.1
A video introducing the fundamentals of working with LAS datasets and the LAS Dataset Toolbar.
Peter August Honored by URI Foundation
The Environmental Data Center's own Peter August was recently awarded with the URI Foundation’s 2013 Scholarly Excellence Award. More information is available in this URI College of the Environment and Life Sciences news article. Congratulations!