Demo figure to showcase HCP (HeatmapCovariatePlot) Matlab package for generating publication-quality, highly customizable heatmaps annotated with continuous or categorical metadata variables (https://doi.org/10.21105/joss.01291). Integrated visualization of clinico-pathological features (Liu, 2018) and molecular alterations in mutational status, copy number alterations (CNAs) (Akbani, 2015), immune cell composition (Thorsson, 2018) and protein profiles (TCGANetwork; Grossman, 2016) determined in primary tumour samples of n=61 cutaneous melanoma patients from the The Cancer Genome Atlas network (TCGA) cohort.