imagexd: Fix notebook inline image links

Author: stefanv

Makefile

@@ -15,7 +15,7 @@ NOTEBOOKS = $(patsubst %.md, %.ipynb, $(MD_OUTPUTS))
 
 .SECONDARY: $(MD_OUTPUTS) $(NOTEBOOKS)
 
-$(GENERATED_LESSONS_DIR)/%.ipynb:$(LESSONS_DIR)/%.md book/lessons
+$(GENERATED_LESSONS_DIR)/%.ipynb:$(LESSONS_DIR)/%.md book/lessons book/lessons/images
         # This does not work, due to bug in notedown; see https://github.com/aaren/notedown/issues/53
 	#notedown --match=python --precode='%matplotlib inline' $< > $@
 	notedown --match=python $< > $@
@@ -30,6 +30,9 @@ $(GENERATED_LESSONS_DIR)/%.ipynb:$(LESSONS_DIR)/%.md book/lessons
 book/lessons:
 	mkdir -p book/lessons
 
+book/lessons/images:
+	ln -s ${PWD}/lessons/images ${PWD}/book/lessons/images
+
 html: | _requirements.installed $(NOTEBOOKS) $(MD_OUTPUTS)
 	@export SPHINXOPTS=-W; make -C book html
 	cp $(GENERATED_LESSONS_DIR)/*.ipynb book/build/html/lessons/

book/imagexd.rst

@@ -59,3 +59,4 @@ Schedule
    Matplotlib <lessons/matplotlib/matplotlib>
    lessons/0_images_are_arrays
    lessons/1_ransac
+   lessons/1_advanced_numpy

lessons/1_advanced_numpy.md

@@ -12,15 +12,15 @@ FIRST...
 
 How genes work:
 
-<img src="../../_images/centraldogma.png" width="600">
+![central dogma](images/centraldogma.png)
 
 What this means:
 
-<img src="../../_images/gene-expression.png" width="600">
+![gene expression](images/gene-expression.png)
 
 How we measure it:
 
-<img src="../../_images/rnaseq.png" width="600">
+![rna sequence](images/rnaseq.png)
 
 ## some fake data