Available with Spatial Analyst license.
Available with Image Analyst license.
Summary
Calculates the tangent of cells in a raster.
Illustration
Usage
In mathematics, all trigonometric functions have a defined range of valid input values, called the domain. The output values from each function also has a defined range. For this tool
The Domain is : -∞ < [in_value] < ∞
The Range is : -∞ < [out_value] < ∞
Note that -∞ and ∞ represent the smallest negative and largest positive value supported by the particular raster format, respectively.
The input values for this tool are interpreted to be in radians. If the input you want to use is in degrees, the values must first be divided by the radians-to-degrees conversion factor of 180/pi, or approximately 57.296.
For further assistance, a procedure to follow and examples of converting input values in degrees to radians are available.
The output values from this tool are interpreted as unitless.
Output values are always floating point, regardless of the input data type.
Due to the range of values, applying a Histogram Equalized stretch renderer can be useful to best see the results.
If the input is a multiband raster, the output will be a multiband raster. The tool will perform the operation on each band in the input.
See Analysis environments and Spatial Analyst for additional details on the geoprocessing environments that apply to this tool.
Syntax
Tan(in_raster_or_constant)
Parameter | Explanation | Data Type |
in_raster_or_constant | The input for which to calculate the tangent values. To use a number as an input for this parameter, the cell size and extent must first be set in the environment. | Raster Layer; Constant |
Return Value
Name | Explanation | Data Type |
out_raster | The output raster. The values are the tangent of the input values. | Raster |
Code sample
This example calculates the tangent of the values in the input Grid raster.
import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
outTan = Tan("degs")
outTan.save("C:/sapyexamples/output/outtan")
This example calculates the tangent of the values in the input Grid raster and outputs a TIFF raster.
# Name: Tan_Ex_02.py
# Description: Calculates the tangent of cells in a raster
# Requirements: Spatial Analyst Extension
# Import system modules
import arcpy
from arcpy import env
from arcpy.sa import *
# Set environment settings
env.workspace = "C:/sapyexamples/data"
# Set local variables
inRaster = "degs"
# Execute Tan
outTan = Tan(inRaster)
# Save the output
outTan.save("C:/sapyexamples/output/outtan.tif")
Environments
Licensing information
- Basic: Requires Spatial Analyst or Image Analyst
- Standard: Requires Spatial Analyst or Image Analyst
- Advanced: Requires Spatial Analyst or Image Analyst