fix corg heatmap to not make negative distances and only use graphs that are corgable
fix corg heatmap to not make negative distances and only use graphs that are corgable

adamnovak/hgvm-graph-bakeoff-evalutations,glennhickey/hgvm-graph-bakeoff-evalutations,adamnovak/hgvm-graph-bakeoff-evaluations,glennhickey/hgvm-graph-bakeoff-evalutations,glennhickey/hgvm-graph-bakeoff-evaluations,BD2KGenomics/hgvm-graph-bakeoff-evalutations,glennhickey/hgvm-graph-bakeoff-evalutations,BD2KGenomics/hgvm-graph-bakeoff-evalutations,BD2KGenomics/hgvm-graph-bakeoff-evalutations,glennhickey/hgvm-graph-bakeoff-evaluations,adamnovak/hgvm-graph-bakeoff-evalutations,adamnovak/hgvm-graph-bakeoff-evalutations,adamnovak/hgvm-graph-bakeoff-evaluations,glennhickey/hgvm-graph-bakeoff-evaluations,adamnovak/hgvm-graph-bakeoff-evaluations