anchor.diff:            .qi-dropdown.qi-y-axis-dropdown
               button.qi-dropbtn
                 span.qi-dropdown-icon.qi-xy Y
  -              span {{ choices.y[chart.y] }}
  +              span {{ choices.y[chartAxes.y] }}
                 span.qi-caret.caret
               .qi-dropdown-content
                 .qi-dropdown-choice(
                   ng-repeat="(key,val) in choices.y"
  -                ng-model="chart.y"
  -                ng-click="chart.y=key"
  +                ng-model="chartAxes.y"
  +                ng-click="chartAxes.y=key"
                 )
                   span.qi-dropdown-icon.qi-check-hide(
  -                  ng-show="val!=choices.y[chart.y]"
  +                  ng-show="val!=choices.y[chartAxes.y]"
                   ) &#10003;
                   span.qi-dropdown-icon.qi-check-show(
  -                  ng-show="val==choices.y[chart.y]"
  +                  ng-show="val==choices.y[chartAxes.y]"
                   ) &#10003;
                   span.qi-dropdown-text {{ val }}
  -      .row   
  -        .col-md-12.qi-correlation-chart(id="qi-correlation-chart-{{ $index }}")
  +      .row
  +        .col-md-12.qi-correlation-chart(id="qi-correlation-chart-{{ $index + 1 }}")
   
   block help-text
     // The nested quote ensures evaluation to a string rather than
  
positive.code: extends ../layout/partial
  
  block billboard
    | {{ collection }} Summary
  
  block content
    div.qi-correlation-charts(qi-correlation-charts)
    // The patient/visit table and chart.
    .row.qi-patient-summary
      .col-md-2.qi-profile-panel.qi-patient-table#qi-patient-table
      .col-md-10#qi-patient-chart
  
negative.code:   // type, the key value is the data type handle and the value is the text
    // label that is displayed in the dropdown.
    .row
      .col-md-6(ng-repeat="chartAxes in axes")
        // TODO - scooch the dropdowns over to the right, or perhaps
        //   center them over their respective chart.
        // TODO - put the dropdowns in an include.
        .row.qi-axis-dropdowns
          .col-md-4
            // The X axis dropdown.
            .qi-dropdown.qi-x-axis-dropdown
              button.qi-dropbtn
                span.qi-dropdown-icon.qi-xy X
                span {{ choices.x[chartAxes.x] }}
                span.qi-caret.caret
              .qi-dropdown-content
                .qi-dropdown-choice(
                  ng-repeat="(key,val) in choices.x"
                  ng-model="chartAxes.x"
                  ng-click="chartAxes.x=key"
                )
                  span.qi-dropdown-icon.qi-check-hide(
                    ng-show="val!=choices.x[chartAxes.x]"
                  ) &#10003;
                  span.qi-dropdown-icon.qi-check-show(
                    ng-show="val==choices.x[chartAxes.x]"
                  ) &#10003;
                  span.qi-dropdown-text {{ val }}
          .col-md-4
  