mapGen | Procedural maze map generator using the growing tree

in the problem of today is about unity well i 'm always in the beginnings so i just took a full asset from the store so while applying some changes i just get a crazy error saying that no cameras rendering in the start of the project everything work smoothly this is the script linked to the camera this script just trying to make a map generator not completed yet

I have an array containing the the height of the vertices of a terrain map. When I first draw the terrain it looks fine:

But as I rotate it across the z-axis, parts of the shape seem to be projected behind vertices on the back:

90 degree rotation (z-axis):

~180 degree rotation (z-axis):

Besides my implementation of the map, my code is fairly simple:

Vertex Shader:

I'm trying to calculate normals of my grid surface. The map is 29952px x 19968px and each cell is 128px x 128px. So I have 36895 vertices.

Grid:

My flat map array is sent to shaders with the following structure:

I have a dataset contains lines and I have imported them into R. I want to take a close look at the coordinates of them and define the identical first and last coordinate of each point if there is some -->(looking for polygon). Therefore, I am using Slot which makes me able to have a close look at the details of the desired object. My final goal is to define the number of identical point coordinates(First and last) for each line in order to discover the number of the potential polygon in my data. recapping my difficulty is the following question: How many of lines objects have potential to be a polygon? To do so, I have done several steps: In the first step, I read my data into R. The second step, I have used slot to have a close look at the coordinate of each point(Sequence of points represent line object). the third step: I have tried to define the number of identical points but I have faced with an error says CRDs not found

at the following, you can tack a look at the codes