distance2coast.md

Tool to Add Distance to Coastline from CSV file

Using contours data and an estimate of the coastline elevation, this tool will help in adding distance value of point data coordinates to the created coastline. To use the tool, the user have to download it from here. Then, open the .tbx in ArcGIS. Expand the .tbx file and right click on the tool called: “Add Distance to Coastline from CSV file.tbx”. Go to Properties > Source, and point the .py file from the download.

If, for some reason, the .tbx doesn’t work, it can be re-created by right-clicking in ArcCatalog > New > Toolbox. Right-click on the new tool, go to Parameters tab and add the parameters below.

DISPLAY NAME	DATA TYPE	PROPERTY > DIRECTION > VALUE	PROPERTY > DEFAULT > VALUE	PROPERTY > OBTAINED FROM > VALUE	PROPERTY > FILTER > VALUE	Description
Pre-created Contours from DEM	Feature Class	Input				Pre-created contours. You can also create contours using a digital elavation model and ArcGIS' nternal tool called "Contour", available with the Spatial Analyst license.
Field containing contour values	Field	Input		Pre-created Contours from DEM
Estimate of coastline elevation	Double	Input	0
Output Coordinate System	Coordinate System	Input (Optional)				The coordinate system you will be working on.
Linear Unit	String	Input			FEET_US, METERS, MILES_US	The unit used in the calculation. Make sure this match the coordinate system and the smoothing parameters if it's "checked".
Point CSV file	File	Input				The CSV file containing Latitude and Longitude of points.
Longitude column	Field	Input	Longitude
Latitude column	Field	Input	Latitude
Smooth coastline	Boolean	Input	False			To choose whether to smooth the coastline of not: - Checked: A PAEK smoothing will be applied to the coastline, based on the parameters specified. Small / short contour lines will also be removed. This could be very helpful if the contour was created from high resolution Lidar DEM (cf. figure below). - Unchecked: No smoothing will be applied.
Smoothing threshold	Linear Unit	Input (Optional)		Pre-created Contours from DEM		The minimum length of line that you will keep for smoothing. The unit should be based on the coordinate system you'll be working on.
PAEK Smoothing parameter	Linear Unit	Input (Optional)		Pre-created Contours from DEM		PAEK parameter for smoothing. The unit should be based on the coordinate system you'll be working on.
Set Workspace Directory	Workspace	Input

Then go to Validation tab, and replace the default with:

import arcpy
class ToolValidator(object):
  """Class for validating a tool's parameter values and controlling
  the behavior of the tool's dialog."""

  def __init__(self):
    """Setup arcpy and the list of tool parameters."""
    self.params = arcpy.GetParameterInfo()

  def initializeParameters(self):
    """Refine the properties of a tool's parameters.  This method is
    called when the tool is opened."""
    return

  def updateParameters(self):
    """Modify the values and properties of parameters before internal
    validation is performed.  This method is called whenever a parameter
    has been changed."""
    if self.params[8].value:
        self.params[9].enabled = True
        self.params[10].enabled = True
    else:
        self.params[9].enabled = False
        self.params[10].enabled = False
    return

  def updateMessages(self):
    """Modify the messages created by internal validation for each tool
    parameter.  This method is called after internal validation."""
    return

Here is an image showing a cleaned and uncleaned coastline. The black lines will remain if the cleaning was not applied.