General settings in the MetInterp Editor consists of output times, parameter, units, grid definition and missing data options. These options define the target grids, and the data in those grids. It is recommended that these settings be specified before moving onto other tabs, as some selection in other tabs will be affected by settings here. Of particular note is that the available output provider and save type are affected by the grid definition. The components in the MetInterp General Settings are described in the following figure and the associated table.

Item

Description

1Create aggregate image radio button sets MetInterp to create a single aggregate image from the data.
2Create multiple images radio button sets MetInterp to create an image for each time step specified in the settings.
3Start time field allows for specification of the start time in the computations. When creating aggregate image, this is the start time of the image. When creating multiple images, this is the start time of the first image.
4End time field allows for specification of the end time in the computations. When creating aggregate image, this is the end time of the image. When creating multiple images, this is the end time of the last image.
5Time step amount. In combination with the time step unit, defines the time interval between images when using the Create Multiple Images option.
6Time step unit. In combination with the time step amount, defines the time interval between images when using the Create Multiple Images option.
7Time zone button launches a time zone selector for specifying the time zone of the output data.
8Parameter is a description of the type of data. This specification is unrestricted, but should represent the data. Common parameters are Precipitation and Temperature.
9Data type selection describes how the output data should be distributed over the time interval between images. For example, PER-CUM is period cumulative data typically used for precipitation. INST-VAL is instantaneous values used when instantaneous temperature measurements are used. Note that careful attention should be paid to the input time series, as not all data type conversions are possible. For example, if the input time series is INST-VAL, conversion to an output data type of PER_CUM is not possible, and in this configuration an error will be issued.
10The units in which the output data should be written. This is unrestricted, but should be a reasonable description of the output data units.
11The output coordinate system
12Button to launch a coordinate system editor. This allows for custom definition of a coordinate system.
13Output grid lower left cell x index. This index is based on the coordinate system, considering the cell size. For example, this field is populated in the image above with -1,159, which is -231,8000 meters (-1,159*2,000 meters) from the x origin of the specified coordinate system.
14Output grid lower left cell y index. This index is based on the coordinate system, considering the cell size. For example, this field is populated in the image above with 1,008, which is 201,600 meters (1,008*2,000 meters) from the y origin of the the specified coordinate system.
15Output grid width in number of cells. In the image above, this is the 29 grid cells, so the width of the grid is 58,000 meters (29*2,000 meters).
16Output grid height in number of cells. In the image above, this is the 68 grid cells, so the height of the grid is 136,000 meters (68*2,000 meters).
17Resolution of the grid cells in the coordinate system units
18Percent of allowable missing data in the time window, beyond which the gage will be removed from the analysis.
19Default value for replacing missing values.