Open Overview Tool

This tool is meant to use with very large grids that otherwise would use most of available memory or not be load at all. The selected grid is sub-sampled, during the reading stage, in order to obtain an overview of about 200 rows/ columns. This way, arbitrarily large grids may be previewed, but the quality of the preview will degrade with grid size. Click on the rectangle icon to draw a rectangle on the image. Double clicking the rectangle lets you edit it. A precise control of the rectangle size is available by a right-click and selecting "rectangle-limits". Selecting "Crop Grid" extracts the region inside the rectangle at the grids full resolution.

Copyright <2010>, <Joaquim Luis>

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