Hawth's Analysis Tools for ArcGIS

 You are here: Home > Hawths Tools > Tools Descriptions & Help

 Summary

GENERATE REGULAR POINTS TOOL
Input: a reference layer (a feature or raster layer), or a set of bounding coordinates (XMin, XMax, YMin, YMax)
Output: a point layer of regularly spaced points
Features:

• alternate rows can be offset from each other (the default is a perfectly regular grid)
• for raster reference layers, the first point can optionally be placed in the centre of the top-left cell as opposed to the extreme top-left corner

Limitations:

• there is currently no option to prevent points from being located in NoData cells
• the program always starts in the upper-left corner of the extent of the reference layer

[Click for larger view]

 Example

Figures A & B. In this example, an irregularly shaped raster layer is used as the reference layer (A). (Note that NoData cells have been coloured grey in order to display the true extent of the raster layer). Regular points, with a 10000m spacing were created (B).

 Help

Getting started. It is advisable to decide what will define the extent within which the regular points will be generated before you start the tool. This can either be a feature or raster layer, or a set of coordinates that you manually type in. Note that for reference layers, the extent is considered to be the rectangle that bounds the layer.