add network load demo

closes #103

Co-Authored-By: Santiago Pelufo <[email protected]>

docs/demos/common/network.jl

@@ -0,0 +1,28 @@
+# ---
+# title: Loading a remote TIFF
+# description: This demo shows how to load a TIFF over the network
+# author: Santiago Pelufo, Tamas Nagy
+# cover: assets/coffee.png
+# ---
+
+# The following code can be used to load remote TIFFs without saving them to the
+# disk. 
+
+using TiffImages, Downloads, FileIO
+
+function load_tiff_without_saving(url)
+ buffer = IOBuffer()
+ Downloads.download(url, buffer)
+ bufstream = TiffImages.getstream(format"TIFF", buffer)
+ TiffImages.load(read(bufstream, TiffFile))
+end
+
+# We'll load an example from
+# [`tlnagy/exampletiffs`](https://github.com/tlnagy/exampletiffs) 
+
+coffeepath = "https://github.com/tlnagy/exampletiffs/raw/11516d288c4b03a258aa3027705b0e9d2ce2b5de/coffee.tif"
+coffeeimg = load_tiff_without_saving(coffeepath)
+
+# No disks involved!
+
+save("assets/coffee.png", coffeeimg) #src