# Our Logo In R

**Published:** February 1, 2018

Hi all, so given our logo here at Jumping Rivers is a set of lines designed to look like a Gaussian Process, we thought it would be a neat idea to recreate this image in R. To do so we’re going to need a couple packages. We do the usual `install.packages()`

dance (remember this step can be performed in parallel).

```
install.packages(c("ggplot2", "ggalt", "readr"))
```

We’re also going to need the data containing the points for the lines and which set of points belongs to which line. There is a Gist available to download via Jumping Rivers. To read in the CSV file we’re going to use the raw data link.

```
(dd = readr::read_csv("https://goo.gl/HzNbAp", col_types = "ddc"))
## # A tibble: 40 x 3
## x y type
## <dbl> <dbl> <chr>
## 1 36.9 -311 1
## 2 67.9 -332 1
## 3 179 -156 1
## 4 254 -259 1
## # ... with 36 more rows
```

The data set contains three columns, `x`

, `y`

and `type`

, where `type`

indicates the line. Let’s start with a standard `geom_line()`

```
library("ggplot2")
g = ggplot(dd, aes(x, y))
g + geom_line(aes(group = type))
```

The graph shares similarities with our logo, but is too *discrete*. To smooth the curve, we’ll use a function from the {ggalt} package

```
library("ggalt")
g + geom_xspline(aes(group = type), spline_shape = -0.3)
```

The function `geom_xspline()`

is the X-spline version of `geom_line()`

, drawing a curve relative to the observations. The parameter`spline_shape = -0.3`

controls the shape of the spline relative to the observations. This can be a number between `-1`

& `1`

. Basically, `-1`

= bumpy lines, `1`

= flat lines.

Next we’ll change the widths of the lines

```
(g1 = g + geom_xspline(aes(size = type, group = type), spline_shape = -0.3) +
scale_size_manual(values = (4:1)/2, guide = FALSE))
```

The `scale_size_manual()`

function enables us to control the line widths. Finally, we remove the background

```
g1 + theme_void()
```

The function `theme_void()`

does what it says on the tin it gives us a theme completely void of everything. Bar the lines of course.

That’s all for now. Thanks for reading! :)