| Wind Speed Ratios Window | |
This feature is coming soon to Windographer 5.
This window computes the ratio of one wind speed sensor to another, and shows how that ratio evolves over time. It can help you detect whether the performance of a sensor has degraded over time. The filter controls can help you to confine the analysis to particular atmospheric conditions such as a specific temperature range or a particular direction sector.
Use the controls in the top left corner of the window to choose the wind speed sensors to use as numerator and denominator, the averaging interval, and the display format. Note that, as is often the case in Windographer, the tabular format shows slightly more information than the graphical format.
The filter controls provide several ways to filter the wind speed data that go into the calculations. For details, please see the article on filtering data.
Windographer calculates the ratio of the two wind speed sensors in every time step of the dataset, and within each averaging interval it reports the mean, minimum, maximum, and standard deviation of those ratio values, as well as the 25th percentile, 50th percentile (median), and 75th percentile.
The Filter by section allows you to do a ratio analysis for a subset of your data. For more information see the article on filtering data.
Tip: An alternative way to analyze the ratio of two data columns is to define your own calculated data column as the ratio of two columns, and then examine that ratio column as you would any other data column: in time series graphs, scatter plots, histograms, and so on.
Right-click any graph to change its properties, copy the image to the clipboard, or export it to a file. Right-click on any table to export it to a file, or copy it. See the article on exporting graphs or exporting tables for more information.
See also