WindRose PRO Help

The SHP button allows to export the wind rose as a shapefile, which can be then viewed using a GIS (Geographical Information System) tool.

Note than only wind roses can be exported as shapefiles, not other types of plot.

After clicking the SHP button, the form for setting the shapefile options will appear.

The user must specify the metric or geographical (longitude and latitude) coordinates of the centre of the wind rose. These coordinates will be used for positioning the plot when it is loaded as a layer in a GIS. If the centre is specified by means of its longitude and latitude, the coordinates of all the points needed to build the wind rose will be in terms of longitude and latitude.

Longitude is positive along East; Latitude is positive in the Northern hemisphere.

The user also indicates the scale of the wind rose by means of its maximum size in metres.

The DBF file associated to the shapefile contains the following fields:

• - Direction (direction of the wind rose arm)
• - SpeedLower (lower limit of the data interval)
• - SpeedUpper (upper limit of the data interval)
• - Events (number of events within this direction and data interval)
• - Legend (legend used within the application)
• - R (red component of the color)
• - G (green component of the color)
• - B (blue component of the color)

By means of specific queries, these fields should allow to represent the wind rose witinh the GIS viewer with exactly the same colours and legend captions used within WindRose PRO. The last record of the DBF file will contain information about the calms, provided the "Analyse calms" checkbox has been selected. The fields Direction, SpeedLower and SpeedUpper of this last record will be all equal to -999, and the value of the Legend field will always be Calms.
The percentage circles are not exported in the shapefile.

The shapefile can be exported in any existing directory selected by the user and with any name.