Questions tagged [level-of-detail]

86 questions
0
votes
1 answer

Reducing number of nodes in polygons using Python

I have a shapefile with several contiguous polygons and I want to reduce their number of nodes keeping the adjacent polygons topologically consistent. I was thinking of deleting nodes based on the angle that results from the 2 segments on either…
Adri
  • 1
  • 1
0
votes
1 answer

Execute IF-THEN_ELSE before Execute Calculation - Tableau

I have a graph below. I would like to calculate lapsed rate which is sum of lapsed value divided by sum of inforce value. I use the formula below in calculated field.…
0
votes
1 answer

HLSL shading distance fade x3

Hi all I'm trying to fade between 3 distances. For example I have a grass system that all use the same shader and 3 types of LOD so I need to crossfade between 3 different distances so they don't just pop in. This is how I've been trying to do…
0
votes
1 answer

Tableau: Sum based on Rank

With customers on the row level I have two columns: Revenue and Rank. Revenue is the sum of that customers spend YTD. Rank is a Calculated Field composed of Rank([Revenue]) then modified to Down Pane. I'm looking, via another calculated field, to…
MacAnRiogh
  • 75
  • 6
0
votes
1 answer

Tableau: Global Dimension using Fixed - Linked to Parameter

I have the following Table in Tableau server and using USERNAME() will return the 'Employee' value. +----------+---------+----------+ | Employee | Manager | Job Role | +----------+---------+----------+ | jdoe | hwu | Analyst | | anon |…
woodhead92
  • 127
  • 1
  • 14
0
votes
1 answer

Tableau LOD to find median

I have some data: Inst Dest_Group Dest Cipn1 N I1 C a 43 I1 F a 63 I1 U a 54 I1 C b 96 I1 F b 3 I1 U b 78 I1 C c 12 I1 F c 65 I1 U c 49 I2 C a 3 I2 F a 47 etc... My worksheet is set up so…
As3adTintin
  • 2,406
  • 12
  • 33
  • 59
0
votes
1 answer

Confusing LOD expressions in Tableau

I have the following data structure: Scope,Metric ID,Item ID,System,Color TRUE,A1,123,A,Red FALSE,A1,123,B,Red FALSE,B1,234,C,Red TRUE,B1,234,A,Red FALSE,B1,415,A,Red I'd like to group by Scope, filter on TRUE and get the unique list of Items, then…
Pavel
  • 53
  • 1
  • 2
  • 8
0
votes
1 answer

LOD in three.js (Merging meshes)

I'm looking for a method, where I can use the LOD Object of three.js in a performant way (http://threejs.org/examples/webgl_lod.html). My idea is to implement a LOD method, which is like this one in chapter 2.1…
nero
  • 41
  • 7
0
votes
0 answers

Terrain LOD Camera Moving Crack

I have a grid based terrain and a quadtree for lod. In one simulation step i do the following: handle input. update matrices. build quadtree (view frustum culling, distance check). close cracks. copy enabled points to the vertex array. draw vertex…
Meldryt
  • 75
  • 1
  • 10
0
votes
2 answers

Level of Detail in 3D graphics - What are the pros and cons?

I understand the concept of LOD but I am trying to find out the negative side of it and I see no reference to that from Googling around. The only pro I keep coming across is that it improves performance by omitting details when an object is far and…
user3050832
  • 169
  • 1
  • 11
0
votes
2 answers

DX11 Tessellation LOD with diameter incorrect tessellation values

I implemented the LoD with diameter from following withpaper NVidia TerrainTessellation WhitePaper. In Chapter "Hull Shader:Tessellation LOD" Page 7 there is a very good explenantion of the LoD with diameter. Here a good quote: For each patch…
Jinxi
  • 303
  • 1
  • 13
1 2 3 4 5
6