Negative values in the plot (`ra.get_plot_utilization`)

[mtitov]

If small number of resources was used then it is obvious that the Y axis has negative values

radical.analytics/src/radical/analytics/utils/plot.py

Line 421 in 4882015

orig_y = block[2] - 0.5

Example of the resource utilization plot:

p.s. in my tests, I've had the following correction

correction = 0.5
...
    legend, patches, x, y = ra.get_plot_utilization(
        METRICS, {sid: consumed}, p_zeros[sid][pid], sid)
    for patch in patches:
        patch.set_y(patch.get_y() + correction)
        axarr[idx].add_patch(patch)
...
    axarr[idx].set_ylim([int(y['min'] + correction), int(y['max'] + correction)])