MASSACHUSETTS INSTITUTE OF TECHNOLOGY
MCDIG
CENTER FOR DIGITAL GEOLOGY
As this project progresses, we hope to be able to offer software and hardware that we have developed to the geological community to advance the use of digital field equipment in both teaching and research pursuits. All of our products are currently in an early stage of development, and so are not publicly available. However, if you would like to see what we are working on, please visit our research page. We'd be glad to hear from you if you are working on similar projects, or have suggestions for ways to utilize digital tools in field geology. Contact us at dtfg@mit.edu, or see what various individuals here are working on at our personnel page.
This Arc/INFO shadeset file and ArcView color palette are intended to replicate the USGS color standard put forth in OFR-99-430; however, errors in translation from the postscript standard to the Arc files is possible. The above link leads to a pdf file of the USGS standard, which we recommend you view as a reference, and to understand the colors that are represented in the Arc implementation. Shadecolor numbers in the Arc/INFO shadeset are designed to be identical to those on the USGS standard, with one exception. The USGS standard contains 1000 colors, while the Arc/INFO shadeset limit is 999 colors. We have chosen to eliminate color '0' on the USGS standard, which is white. The links below lead to the Arc/INFO shadeset, the ArcView color palette, and .eps and .pdf representations of the Arc implementation of the shadeset generated using the ArcPlot symboldump command.
To download these files use your browser's 'Save File As' function.
This Arc/INFO AML will take a group of trimmed, indexed-color Tiff Digital Raster Graphics, and merge them into a single Tiff image, removing the white 'wedges' at the edges of the DRGs that result from projecting the DRG files. There is no limit to the number of DRGs that can be merged, but you will need approximately 4 times the physical disk space that the orginal Tiff images occupy to complete the merge process. The AML assumes that the DRGs use either the USGS 13 color DRG standard, or the California 14 color 7.5' DRG standard. DRGs which use a custom color standard are not supported beyond the USGS 13 colors. More details on using the program are available from the Arc/INFO prompt once the AML is run.
To download these files use your browser's 'Save File As' function: