Service updates for TerrSet users; download TerrSet Tutorial Data; Includes a variety of fixes, posted March ; IDRISI Taiga Users – Service Update to v Example: • Hypothetical goal – Find suitable sites for housing projects. • Factors – distance to city center; distance to road; and slope (no. The IDRISI software (launched from Start / All Programs / IDRISI Selva; click on IDRISI Selva). The IDRISI tutorial and the associated data sets. The tutorial (PDF) .
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This should give you a false colour near IR composite of the Fraser Valley. Note that the project and working directories you will be using are different from those specified in the tutorial on page 6, Exercise d and e: You will then import some Landsat data of the Fraser Valley and answer some questions pertaining to that dataset.
Introduction to Image Analysis: What features in particular stand out in the image the ‘fuzzy worms’ 5.
You will be complete five of the Tutorial Part 1: What wavelengths do bands 5 and 7 capture, and what feature characteristics do they, in particular, highlight? The roads, unfortunately, don’t line up with the Landsat images although both use the UTM coordinate system, the georeferencing of the Landsat images taita in some positional error being introduced.
GEOB 373: Introductory Remote Sensing
Week of February idrisu th you have two weeks for this lab. The Group Linked Zoom instructions in Exercise provide more details, if necessary. You have now set both the projects folder and the working directory.
During this lab, and for the remaining labs and in your projectyou will be working with the image processing software program called IDRISI.
Accept the defaults for Contrast stretch type and Output type, but check the box beside Omit zeros Fly through and illumination optional, but it is quick and fun! After some time you should see an image of the the first band appear on your screen. You can access the tutorial from C: The differences between raster and vector data are discussed throughout the exercises, although Exercises and in particular cover the material you should use in your answer to this question.
In completing this and the next three labs Lab 3: To do this, use the Print kdrisi on the composer menu and ensure that you send your image to the appropriate colour printer. Using Windows Explorer, go to: The first thing to do is to create a True Colour composite image. Why is it used i.
Using Landsat data of the Fraser Valley For irdisi part of the lab you will take what you learned in the tutorials, and apply it to a local dataset: Use the shape of the lake to help identify the specific lake [it is actually a reservoir–could you deduce this from the satellite image?
Hand in the printout of your Landsat image composition. Layers and Group files Question 4.
GEOB Lab 3: Introduction to IDRISI
Layer Interaction Effects 1. Print the map composition you created in this exercise. Accept the idriai defaults, and click on OK. Do not save the zip file to H: Home Syllabus Schedule Projects. Loading the data Using Windows Explorer, go to: Repeat for each city; you can add more names if you like e. Select a font size of Click on Projects tab in the Idrisi Explorer window. For this lab, and the succeeding labs, you will be using Windows Explorer to copy, paste, unzip and zip the data:.
Advanced GIS Geob What features in particular stand out in the image the ‘fuzzy worms’ 5 Question Click on Map Properties Add a north arrow and a scale bar.
REF The Landsat images have been georeferenced to a UTM [zone 10, North] coordinate system, so if we assign the same futorial system to the roads [knowing that roads had previously been projected to a UTM coordinate system within ArcGIS], the roads and the Landsat images will be geographically referenced together.
Add the three imagebands band1 as blue, band2 as green, and band3 as red. To create a true colour composite of bands 1, 2 and 3: It sometimes takes a few minutes for Explorer window to refresh and for the new files appear in the listing. Has it been resampled if so, how can you tell? In order to complete Part 2 of this lab, copy the Landsat Select the caption position tuhorial to the anchor point e.
The tutorial PDF can be found here: Click on the check boxand then click on the Tutorual wavelengths are captured by Landsat band 6?
If you are finished, print your map composition using the Print command in the Map Composer. In the Explorer window, click on Files and you should see all 7 bands listed. Apply the tools and concepts you learned in the tutorials to a dataset specific to the lab. Describe the strengths of each of the three images Landsat, Landsat, band 6 you have explored above, in aiding you with respect to interpreting the landscape.
Zoom into the western part of the image somewhere just north of Chilliwack, ensuring that Hope is still visible. Surfaces — Fly through and Illumination This exercise is optional, but it does demonstrate some of the ‘neat’ capabilities of Idrisi.
Hand in the results of your Transparency exercise. Zoom into the area just southeast of Chilliwack where Hwy 1 runs more or less due east-west, and use the Measure tool to determine how far off in a north-south direction only the vector roads are from the roads as imaged in the Landsat images.