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 grid’s full resolution.
Copyright © <2010>, <Joaquim Luis>
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