Errata List and Questions

IMS TEMPLATE

1. The back button does not work correctly when attempting to scroll backwards 100 records.

This is a bug that we intend to fix over the summer, and will ship any new code out to existing users.

INTRODUCTION TO MANIFOLD GIS 6.0

LESSON 3

1. When you have an image (in this case, a dem) in a map, why are you using “project to
map” as opposed to setting the projection by right clicking on the image in the project
window?

This is just another way to perform a coordinate transformation. Its also more convenient than doing it through the project pane.

2. What does it mean when you say that the command “Othogonalize” changes
the total number of coordinates in a read-out.

From the Manifold Help file:

The Orthogonalize command moves coordinates to orthogonal grid positions at the specified X and Y grid steps. The command is used mainly to trim insignificant digits from coordinates...If every coordinate were moved to the nearest ten-meter coordinate position, we would achieve the effect of rounding all coordinates.

LESSON 4

1. It would be helpful if you would include a quick sentence on why it is
a disadvantage to flatten the value column in the land table.

Once you flatten the column it is permanently stored in the new table. Therefore, it is no longer related to the other table. This is also a good thing if you want to make the data permanent.

2. The transfer rules for proportional did not produce the correct values as displayed in the video.

Depending upon how you set up your Tools/Options in an earlier lesson, the transfer rules may not be set to copy/copy. The "Land table" may have the transfer rules set to "Sample/Sum. For the Column "LC" and "Color" change the transfer rules to copy/copy and the transfer rules set for proportional bring out the expected results as displayed in the video.

CUSTOMIZING MANIFOLD GIS 6.5 WITH VBSCRIPT

FINDING THE COMPONENTS

1. At around 16:20, the script copies data from all drawings into the blank drawing. Then, the script copies all the objects and pastes them back into the drawing, creating duplicate objects. The script should have altered the 'if' statement to skip the drawing that contained all the objects.

2. At 24:27 the video replaces the text in the script (because it had minor bugs) with a script that correctly works. Therefore, if you used the text illustrated at 24:27, you will receive an error message in compiling the script. In this case, just use the text that is pasted in later.

3. At 25:00, the script being used displays the average SQMI for the wrong drawing. It should have used the "Provinces" drawing.

4. At 26:15, the video implies that the column IDs are sequential. However, they are not required to be sequential.