Add documentation about off-white background + enforce in examples

examples/matplotlib/example.py

@@ -22,6 +22,8 @@
 # how many histograms to draw in multi-hist plots
 N_HISTS = 8   # exhibits all the colors in the Okabe-Ito cycler
 
+dunestyle.OffWhiteBackground()
+
 ### 1D histogram example ###
 def Hist1D(pdf):
     x = np.random.normal(0, 1, 1000)
@@ -103,7 +105,7 @@ def DataMC(pdf):
              transform=axs[0].transAxes)
 
     fontdict = {"size": 14}
-    axs[0].text(0.68, 0.52, 'A = {0:0.2f}$\pm${1:0.2f}'.format(A, dA),
+    axs[0].text(0.68, 0.52, r'A = {0:0.2f}$\pm${1:0.2f}'.format(A, dA),
                 fontdict=fontdict,
                 transform=axs[0].transAxes)
     axs[0].text(0.68, 0.46, r'$\mu$ = {0:0.2f}$\pm${1:0.2f}'.format(x0, dx0),
@@ -112,7 +114,7 @@ def DataMC(pdf):
     axs[0].text(0.68, 0.40, r'$\sigma$ = {0:0.2f}$\pm${1:0.2f}'.format(sig, dsig),
                 fontdict=fontdict,
                 transform=axs[0].transAxes)
-    axs[0].text(0.68, 0.34, '$\chi^2$/ndof = {0:0.2f}/{1:d}'.format(chi2, ndf),
+    axs[0].text(0.68, 0.34, r'$\chi^2$/ndof = {0:0.2f}/{1:d}'.format(chi2, ndf),
                 fontdict=fontdict,
                 transform=axs[0].transAxes)
     axs[0].legend(fontsize="xx-large")  # since the upper panel is only 70% of the whole canvas, the legend is (by default) too small

examples/root/cpp/example.C

@@ -225,6 +225,7 @@ void OverlayExample(TCanvas * c, std::vector<TH1D>& hists)
 //-------------------------------------------------------------------
 void example()
 {
+  dunestyle::OffWhiteBackground();
 
   TCanvas c;
 

examples/root/python/example.py

@@ -204,6 +204,8 @@ def OverlayExample(c, hists):
 #-------------------------------------------------------------------
 #-------------------------------------------------------------------
 if __name__ == "__main__":
+	dunestyle.OffWhiteBackground()
+
 	c = ROOT.TCanvas()
 	OneDHistExample(c)
 	c.SaveAs("example.pyroot.pdf(")

guidelines.md

@@ -79,9 +79,18 @@ All plots **must**:
 - Check journal style guidelines carefully.
 - Ensure plot text size is similar to that in the body of the article as possible. 
 
-### Colo(u)r palette:
+### Colo(u)r considerations:
 Color choices should look appealing and be accessible to those with color-vision deficiency (CVD).
 
+#### Plot backgrounds:
+
+The high contrast resulting from fully saturated colors against a white background can be difficult for individuals with dyslexia.
+Consider using an "off-white" background instead.
+The functions `OffWhiteBackground()` in both ROOT and matplotlib toolkits in this package will set figure backgrounds 
+to match the off-white background in the [official DUNE slide template](https://docs.dunescience.org/cgi-bin/ShowDocument?docid=78).
+
+#### Markers/lines:
+
 - When discrete curves are shown, the [Okabe-Ito color cycle](https://jfly.uni-koeln.de/color/) is recommended.
   (`dune_plot_style` sets the default matplotlib cycler to Okabe-Ito; 
    the `dunestyle::colors::NextColor()` function can be used to obtain this cycle in ROOT.)

src/matplotlib/python/dunestyle.py

@@ -147,7 +147,7 @@ def SetOkabeItoColors():
     cyc = cycler(color=['#000000', '#D55E00', '#56B4E9', '#E69F00', '#009E73', '#CC79A7', '#0072B2', '#F0E442',])
     plt.rc("axes", prop_cycle=cyc)
 
-def off_white_bkg():
+def OffWhiteBackground():
     """ Set the background color of the figure to match the off-white background of the updated DUNE slide template. """
 
     plt.rcParams['axes.facecolor'] = '#f0f0f0'

src/matplotlib/stylelib/dune.mplstyle

@@ -13,7 +13,7 @@ text.hinting_factor : 8
 
 #mathtext.fontset : cm
 
-figure.facecolor: white (default, can be changed with off_white_bkg to #f0f0f0 for slides)
+figure.facecolor: white # (default, can be changed with off_white_bkg to #f0f0f0 for slides)
 
 axes.facecolor: white # eeeeee (default, can be changed with off_white_bkg to #f0f0f0 for slides)
 axes.edgecolor: black