---
myst:
    substitutions:
        bloc:
            python: 14-15,18
            cpp: 4,12,14
---
# Graph 2D "profile"

It consists in partitioning the "x" axis with a number of *bins* and in plotting, for each segment, 
the mean value in blue and the standard deviation by a black line. The number of segments N is passed 
as an option with the formalism **nclass=N**.  We can also visualise the scatterplot just below the 
profile plot, by adding the option "same" (resulting in the red points also shown in 
{numref}`dataserver_geyser_profile_2vs1`).

{{                                                                                                  
    "```{literalinclude} " + parent_dir                                                             
    + "/roottest/uranie/doc/dataserver/vizualisation/" + language + "/draw_geyser_profile_2vs1." 
    + extension + "\n" 
    + ":language: " + language + "\n"
    + ":lines: " + bloc[language] + "\n"                                                   
    + "```"                                                                                         
}}  

{{                                                                                                  
    "```{" "figure" "} " + parent_dir +                                                             
        "/roottest/build/uranie/doc/dataserver/vizualisation/" + language 
        + "/geyser_6/geyser_profile_2vs1.png\n"
    ":align: center\n"                                                                              
    ":name: dataserver_geyser_profile_2vs1\n"                                            
    + figure_scale + "\n"                                                                
    "\n"                                                                                            
    "Scatterplot between attributes x1 and x2 of the " + tds + " `geyser`.\n" 
    "```"                                                                                           
}}