Using GeoLab Lesson 04
Please start this lesson with the following:
- 1. For each GeoLab record type in the "configuration group" (ADEC, ANGT, CDEC, CLEV, COMP, CONF, CONV, ELIP, END, FCOV, GRP, HI, HIST, HT, LDEC, LUNT, MAXI, PADJ, PGEO, PMIS, PRES, PSOL, RTST, SIGM, TITL, VARF, VSCA, VSGL), identify the corresponding option, if there is one, in the Project Options dialog (click the "Edit default options..." button in GeoLab's Project/Setup tab).
When identifying an option in your answer, use the format "Page/tab name; Control group title (if any); Control name". For example: "Adjustment; Computation Options; Compute Full Inverse".
- 2. In the GeoLab Preferences dialog, explain the importance of the "Ignore Observation Standard Deviation When SIGM Record is Used" checkbox. Should this checkbox normally be checked or unchecked, and why?
- 3. What is the importance of the "Read-Only Check Box" in the Tools/Reference Ellipsoids and Tools/Map Projections dialogs?
- 4. How can the "Re-load names" button provided in the Assistant tab, be useful?
- 5. How can the GeoLab "Adjusted Coordinates Lister" dialog (Project/Tools tab, "Adjusted coords..." button) be useful when we need to improve the accuracy of initial coordinates during the iterations of an adjustment?
And then, complete the following:
Use the GeoLab Records Overview page, and its links, to access information about all GeoLab record types as needed. Use GeoLab's Assistant tab and its fields editor to create a new IOB file containing one or more records (lines of text) for every one of the GeoLab record types. In doing so, please observe the following requirements when creating your GeoLab records:
- 6. Each record you create must be in its proper context. For example, when you create a DIR record, that record must be preceded by a DSET header record (required by GeoLab).
- 7. All records you create must contain valid data in all its fields, but there is no need to make all records consistent as a network.
- 8. You must create all records using the Record Editor.
- 9. You must create the records in at least two new IOB files that you create - one of the IOB files must be #included by the other (only one #include record is to be used). Please use the Getting Started with GeoLab page as a guide for the organization of your new IOB files.
Please submit your answers by email as usual. Thank you.