Question

for a desired small region in your country,extract DEM file from USGS site and import it...

for a desired small region in your country,extract DEM file from USGS site and import it in ArcGIS

Homework Answers

Answer #1

The following instructions will only work if you DEM is in USGS format. Most DEMs from the USGS are not in USGS format (go figure…) – it is in SDTS format (but the USGS is also now producing DEMs in other formats including ArcGrid). If your DEM is in SDTS format (Spatial Data Transfer Standard), you will need to use the Import SDTS Raster to Grid tool in ArcToolbox.

After you download the DEM, you need to unzip it. Once it is unzipped, you can import it into ArcGIS.

  • Start ArcToolbox, and choose Conversion Tools – Import to Raster – DEM to Grid. Read the Help information before you begin, then follow the instructions
  • The USGS DEM is the file that ends in .dem (e.g., 3097420g.dem)
  • Leave all the defaults as they are for now – we will talk about these in class.
  • For output grid, you can navigate to your personal folder and type in a new name – this will be the final ESRI formatted DEM that you will work with, so give it a good name, like the name of the quad map it represents (e.g., austin_west). But read this carefully – you cannot specify a folder that has spaces in the folder name; in fact, no folder in the entire path on the computer can have spaces in it (don’t ask me why). So the folder path to this new grid needs to be something like C:tempedwards_groupdemaustin_west
  • Once the importing process is done, take a look at the results in file manager or explorer – notice that there are now two folders, one called the name that you gave the grid (e.g., austin_west) and one called info. This is an ArcInfo formatted GIS data set.
  • Next add the new grid to a data frame in ArcMap.
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Background You are the President of a large industrialized country. There are 12,000 foreigners from, mostly,...
Background You are the President of a large industrialized country. There are 12,000 foreigners from, mostly, poor economic countries trying to, illegally, enter your country. A small % of these foreigners are seeking asylum but, the majority, are looking for a better life in USA. According to ICE, and other security departments, in your government, a certain %, of these 12,000 foreigners, are actually, enemies of the your country and, others, have criminal records, in their own countries. Facts about...
  Instructions:    Read the topic “Supply Chain Management” from your desired sources and write the answer...
  Instructions:    Read the topic “Supply Chain Management” from your desired sources and write the answer       keeping an eye on the given below important points:                                                                                                                                                                             --------------------------------------------------------------------------------------------------------------------- Q. Analyze critically that under what circumstances might a company want to use Supply      Chain Services in Logistics Management from a third party?                                                                                                                                                                                                                                                                 Although it largely depends on students creativity but answer KEY points should be included: !-ships small packages occasionally 2-cost of shipment 3-delivery...
Chapter 1 Running Your Own MNC Developing Your Idea Create an idea for your own MNC...
Chapter 1 Running Your Own MNC Developing Your Idea Create an idea for your own MNC to conduct international business. Your idea should be simplified to the degree that you could possibly implement it someday. However, your idea should also be sufficiently creative to be successful if done properly. Your idea should focus on one country and one foreign currency, since many MNCs are focused in this manner when they are first created. So that you can recognize the issues...
Overview Your assignment is to complete a wireless network design for a small company. You will...
Overview Your assignment is to complete a wireless network design for a small company. You will place a number of network elements on the diagram and label them appropriately. A network diagram is important to communicate the design features of a network between network administrators, system administrators and cyber-security analysts. It helps to create a shared mental model between these different technologists, yet each will have their own perspective on what is important to have documented on the diagram. Please...
PHP, HTML5 Accounting Import The Mammoth Island Tourism Company is undergoing a project to digitize a...
PHP, HTML5 Accounting Import The Mammoth Island Tourism Company is undergoing a project to digitize a large quantity of paper documents, sales records going back 100 years. They’ve already commissioned a company to digitize the documents into a text format, but now they require an application to extract a small amount of useful information from the documents. Unfortunately, their accounting format changed several times over the course of business, so the application must be intelligent enough to find the data....
Sign In INNOVATION Deep Change: How Operational Innovation Can Transform Your Company by Michael Hammer From...
Sign In INNOVATION Deep Change: How Operational Innovation Can Transform Your Company by Michael Hammer From the April 2004 Issue Save Share 8.95 In 1991, Progressive Insurance, an automobile insurer based in Mayfield Village, Ohio, had approximately $1.3 billion in sales. By 2002, that figure had grown to $9.5 billion. What fashionable strategies did Progressive employ to achieve sevenfold growth in just over a decade? Was it positioned in a high-growth industry? Hardly. Auto insurance is a mature, 100-year-old industry...