Minor image fix (plotly#71)

HammadTheOne · web-flow · commit 3e32b0516aaa · 2021-08-18T02:00:17.000-04:00
* Update 2021-08-03-horizontal-vertical-shapes.Rmd

* Removing Python reference
diff --git a/r/2020-02-25-images.Rmd b/r/2020-02-25-images.Rmd
@@ -1,5 +1,5 @@
 ---
-description: How to display image data in Python with R.
+description: How to display image data with R.
 display_as: scientific
 language: r
 layout: base
@@ -40,7 +40,7 @@ library(EBImage)
 
 img = readImage('https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/240px-Crab_Nebula.jpg')
 
-fig <- plot_ly(type="image", z=img*255) 
+fig <- plot_ly(type="image", z=img*255)
 fig
 ```
 ### Define the data range covered by the color range with zmin and zmax
@@ -54,11 +54,11 @@ library(EBImage)
 
 img = readImage('https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/240px-Crab_Nebula.jpg')
 # Stretch the contrast of the red channel only, resulting in a more red image
-fig <- plot_ly(type="image", z=img*250, 
+fig <- plot_ly(type="image", z=img*250,
                zmin=c(10, 0, 0), zmax=c(200, 250, 250))
 fig
 ```
-### Set Ticks and Margins 
+### Set Ticks and Margins
 
 ```{r}
 library(plotly)
@@ -74,11 +74,11 @@ fig
 
 ### Drawing Shapes on Images
 
-You can create layout shapes programatically, but you can also draw shapes manually by setting the `dragmode` to one of the shape-drawing modes: `drawline`,`drawopenpath`, `drawclosedpath`, `drawcircle`, or `drawrect`. If you need to switch between different shape-drawing or other dragmodes (panning, selecting, etc.), modebar buttons can be added in the `config` of your figure to select the dragmode. 
+You can create layout shapes programatically, but you can also draw shapes manually by setting the `dragmode` to one of the shape-drawing modes: `drawline`,`drawopenpath`, `drawclosedpath`, `drawcircle`, or `drawrect`. If you need to switch between different shape-drawing or other dragmodes (panning, selecting, etc.), modebar buttons can be added in the `config` of your figure to select the dragmode.
 
 If you switch to a different dragmode such as pan or zoom, you will need to select the drawing tool in the modebar to go back to shape drawing.
 
-This shape-drawing feature is particularly interesting for annotating graphs, in particular [image traces](https://plotly.com/r/displaying-images/). 
+This shape-drawing feature is particularly interesting for annotating graphs, in particular [image traces](https://plotly.com/r/displaying-images/).
 
 Once you have drawn shapes, you can select and modify an existing shape by clicking on its boundary (note the arrow pointer). Its fillcolor turns to pink to highlight the activated shape and then you can
 
@@ -98,7 +98,7 @@ library(EBImage)
 
 img = readImage('https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/240px-Crab_Nebula.jpg')
 
-fig <- plot_ly(type="image", z=img*255) 
+fig <- plot_ly(type="image", z=img*255)
 
 fig <- layout(fig, dragmode="drawrect", xaxis = list(title = 'Click and drag inside the figure to draw a rectangle or select another shape in the modebar'))
 
@@ -110,4 +110,4 @@ fig
 ```
 
 ### Reference
-See [https://plotly.com/r/reference/#image](https://plotly.com/r/reference/#area) for more information and chart attribute options!
+See [https://plotly.com/r/reference/#image](https://plotly.com/r/reference/#area) for more information and chart attribute options!
diff --git a/r/2021-07-27-ml-pca.Rmd b/r/2021-07-27-ml-pca.Rmd
@@ -15,7 +15,6 @@ thumbnail: thumbnail/ml-pca.png
 ```{r, echo = FALSE, message=FALSE}
 knitr::opts_chunk$set(message = FALSE, warning = FALSE)
 ```
-## PCA Visualization in Python
 Visualize Principle Component Analysis (PCA) of your high-dimensional data in R with Plotly.
 
 This page first shows how to visualize higher dimension data using various Plotly figures combined with dimensionality reduction (aka projection). Then, we dive into the specific details of our projection algorithm.
diff --git a/r/2021-08-03-horizontal-vertical-shapes.Rmd b/r/2021-08-03-horizontal-vertical-shapes.Rmd
@@ -9,7 +9,7 @@ output:
   html_document:
     keep_md: true
 permalink: r/horizontal-vertical-shapes/
-thumbnail: thumbnail/shape.png
+thumbnail: thumbnail/shape.jpg
 ---
 
 ```{r, echo = FALSE, message=FALSE}
