Added all files for fill-between-area-curve

Author: avinsit123

.gitignore

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+*~
+*.asv

Example.mlx

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+# Fill Between Area Curve
+
+[![View FillBetweenAreaCurve on File Exchange](https://www.mathworks.com/matlabcentral/images/matlab-file-exchange.svg)]()
+
+Version 1.0
+
+<img src="examplePic.png">
+
+## Description 
+The Fill Between Area Curve creates a shaded area between two data series, effectively highlighting the region of overlap or difference.
+
+## Dependencies
+For optimal performance and accurate graphs, please install the <b> Mapping Toolbox </b>. 
+
+## Syntax
+* `fillBetweenAreaCurve(x, y1, y2)` shades the area between 2 lines formed by y1 and y2
+* `fillBetweenAreaCurve(x, y1, y2, c)` shades the area between 2 lines formed by y1 and y2 with color c.
+* `fillBetweenAreaCurve(__, Name, Value)` specifies additional options for the FillBetweenAreaCurve using one or more name-value pair arguments. Specify the options after all other input arguments.
+
+## Name-Value Pair Arguments/Properties
+
+* `XData` Array containing values of x-coordinates for both plots y1 and y2. <b> Note: x-coordinates for both y1 and y2 should be common </b>
+* `Y1Data` y-coordinates of y1 plot
+* `Y2Data` y-coordinates of y2 plot
+* `Condition` The condition property selectively shades the area based on the condition provided by the user. 
+* `ShadeInverse` Shades all the unshaded regions between 2 curves with a different color. 
+* `OptimizePerformance` Calculate the vertices of triangles that compose the patch manually instead of asking patch to do it
+## Stylistic Name-Value Pair Arguments/Properties
+
+* `FaceAlpha` Describes opacity of shaded area. If set to 1, the shaded area is completely opaque. If set to 0, the shaded area is completely transparent. 
+* `FaceColor` Describes the color of shaded area specified by Condition
+* `InverseFaceColor` If ShadeInverse is set to true, we shade the unshaded region with InverseFaceColor
+* `Line1Color` Line color for plot describing y1 values
+* `Line2Color` Line color for plot describing y2 values
+* `XLabel` Label for x axis
+* `YLabel` Label for y axis
+* `Line1LineStyle` Line Spec for plot describing y1 values
+* `Line2LineStyle` Line Spec for plot describing y2 values
+* `Line1LineWidth` Line Width for plot describing y1 values
+* `Line2LineWidth` Line Width for plot describing y2 values 
+* `Label1` Label for plot describing y1 values
+* `Label2` Label for plot describing y2 values
+* `Title` Title of the chart
+
+
+### How to use
+
+```
+% Intialize some data 
+x = linspace(0, 4 * pi, 20);
+y_sinx = sin(x);
+y_cosx = cos(x);
+
+% Create a basic FillBetweenAreaCurve
+areaCurve = fillBetweenAreaCurve(x, y_sinx, y_cosx);
+
+% Create a basic FillBetweenAreaCurve with magneta shading
+areaCurveMagneta = fillBetweenAreaCurve(x, y_sinx, y_cosx, 'm');
+
+
+% Create a FillBetweenAreaCurve with selective shading
+areaCurveSelectiveShading = fillBetweenAreaCurve(x, y_sinx, y_cosx, 'Condition',   @(x, y1, y2) x > 2 & x < 4);
+areaCurveCondition2.ShadeInverse = false;
+
+```

README.md

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+# Reporting Security Vulnerabilities 
+
+If you believe you have discovered a security vulnerability, please report it to 
+[security@mathworks.com](mailto:security@mathworks.com). Please see 
+[MathWorks Vulnerability Disclosure Policy for Security Researchers](https://www.mathworks.com/company/aboutus/policies_statements/vulnerability-disclosure-policy.html) 
+for additional information. 

SECURITY.md

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+classdef ValidationFunctions
+
+    methods 
+        function [x, y1, y2] = performAllValidations(obj, x, y1, y2)
+            obj.validateDuplicateXValues(x);
+            obj.validateInputs(x, y1, y2);
+            [x, y1, y2] = obj.validateAndCleanMissingData(x, y1, y2);
+        end
+        
+        % Validate and Clean Missing Data in the inputs
+        function [x, y1, y2] = validateAndCleanMissingData(obj, x, y1, y2)
+            missing_x = find(isnan(x));
+            missing_y = find(isnan(y1));
+            missing_z = find(isnan(y2));
+            missing_idx = union(union(missing_x, missing_y), missing_z);
+            x(missing_idx) = [];
+            y1(missing_idx) = [];
+            y2(missing_idx) = [];
+        end
+        
+        function validateDuplicateXValues(obj, x)
+           if numel(x) ~= numel(unique(x))
+                error("X values cannot be duplicated. X array should entirely consist of unique x-values")
+           end
+        end
+        
+        % Validate Inputs
+        function validateInputs(obj, x, y1, y2)
+            % If length of x is not equal to both y1 and y2, then we cannot create
+            % the graph
+            if numel(x) ~= numel(y1)
+                error("invalid1:InputsAreInvalid", "Length of x is not equal to length of y1")
+            end
+            
+            if numel(x) ~= numel(y2)
+                error("invalid2:InputsAreInvalid", "Length of x is not equal to length of y2")
+            end
+        end
+    end
+
+
+end