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docs: introduce MosaicViews as dataset preview utils #82

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docs: introduce MosaicViews as dataset preview utils #82

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5203e3d
docs: introduce MosaicViews as dataset preview utils
johnnychen94 Oct 29, 2021
d1ab622
move ImageShow to make.jl and add missing docs dependency
johnnychen94 Oct 29, 2021
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4 changes: 4 additions & 0 deletions docs/Project.toml
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Original file line number Diff line number Diff line change
@@ -1,2 +1,6 @@
[deps]
Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
ImageCore = "a09fc81d-aa75-5fe9-8630-4744c3626534"
ImageIO = "82e4d734-157c-48bb-816b-45c225c6df19"
ImageShow = "4e3cecfd-b093-5904-9786-8bbb286a6a31"
MLDatasets = "eb30cadb-4394-5ae3-aed4-317e484a6458"
5 changes: 3 additions & 2 deletions docs/make.jl
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@@ -1,4 +1,5 @@
using Documenter, MLDatasets
using ImageShow # for better image display

## Commented out since gives warning
# DocMeta.setdocmeta!(MLDatasets, :DocTestSetup, :(using MLDatasets); recursive=true)
Expand Down Expand Up @@ -34,7 +35,7 @@ makedocs(
"Iris" => "datasets/Iris.md",
"Boston Housing" => "datasets/BostonHousing.md",
],

"Text" => Any[
"PTBLM" => "datasets/PTBLM.md",
"UD_English" => "datasets/UD_English.md",
Expand All @@ -54,4 +55,4 @@ makedocs(
)


deploydocs(repo = "github.com/JuliaML/MLDatasets.jl.git")
deploydocs(repo = "github.com/JuliaML/MLDatasets.jl.git")
17 changes: 17 additions & 0 deletions docs/src/index.md
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Expand Up @@ -55,3 +55,20 @@ will trigger a download dialog to `~/.julia/datadeps/MNIST`. To
overwrite this on a case by case basis, it is possible to specify
a data directory directly in `traindata(dir = <directory>)` and
`testdata(dir = <directory>)`.

## Preview

For image dataset, [`MosaicViews`](https://github.com/JuliaArrays/MosaicViews.jl) provides a very simple interface to display a list
of images.
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The fact that MosaicViews is not directly used in the code below is a bit confusing.
Maybe we can just point to the mosaic function from ImageCore.


```@example
using MLDatasets
using ImageCore

# The original dataset is stored in row-major order, to display it
# normally in Julia, we need to permute the first two dimensions.
test_x = Gray.(PermutedDimsArray(MNIST.testtensor(), (2, 1, 3)));
test_x_sample = @view test_x[:, :, 1:64];

mosaic(test_x_sample, nrow=8)
```