# 3D Streamtube Plots in R

How to create streamtube plots with Plotly.

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#### Introduction

In streamtube plots, attributes inlcude x, y, and z, which set the coorindates of the vector field, and u, v, and w, which sets the x, y, and z components of the vector field. Additionally, you can use starts to determine the streamtube's starting position. Lastly, maxdisplayed determines the maximum segments displayed in a streamtube.

#### Basic Streamtube Plot

library(plotly)

fig <- df %>%
plot_ly(
type = 'streamtube',
x = ~x,
y = ~y,
z = ~z,
u = ~u,
v = ~v,
w = ~w,
sizeref = 0.5,
cmin = 0,
cmax = 3
)
fig <- fig %>%
layout(
scene = list(
camera = list(
eye = list(
x = -0.7243612458865182,
y = 1.9269804254717962,
z = 0.6704828299861716
)
)
)
)

fig


#### Starting Position and Segments

library(plotly)

fig <- df %>%
plot_ly(
type = 'streamtube',
x = ~x,
y = ~y,
z = ~z,
u = ~u,
v = ~v,
w = ~w,
starts = list(
x = rep(80, 16),
y = rep(c(20,30,40,50), 4),
z = c(rep(0,4),rep(5,4),rep(10,4),rep(15,4))
),
sizeref = 0.3,
showscale = F,
maxdisplayed = 3000
)
fig <- fig %>%
layout(
scene = list(
aspectratio = list(
x = 2,
y = 1,
z = 0.3
)
),
margin = list(
t = 20, b = 20, l = 20, r = 20
)
)

fig