All graph types do not show the lowest value in the dataset

[bennyguk]

When plotting data with any of the three chart types, the lowest value in the dataset is never drawn. This is perhaps most obviously demonstrated with a bar plot.

For example, If I create an array called "test" and add values from 1-10, like this:

You get a chart that looks like this:

You can see that the y-axis starts at 2 and not 1, and the first value is completely missing.

The result should look like this:

After doing some debugging, I believe the reason for this is because of two issues in Show-Graph.ps1.

On line 148 the below code never processes the last value in the set:
For($i=$NumOfRows;$i -gt 0;$i--)

Simply changing the -gt comparison operator to -ge ensures the for-loop processes all the data points:
For($i=$NumOfRows;$i -ge 0;$i--)

That alone does not resolve the issue though. The second section of code that needed changing is at line 221:
elseif($RangePercent -le 40 -and $RangePercent -ge 1)

A similar issue to the above, the code is not processed when $i is equal to 0:
$RangePercent = $i/$NumOfRows * 100
elseif($RangePercent -le 40 -and $RangePercent -ge 1)

Simply changing line 221 to elseif($RangePercent -le 40 -and $RangePercent -ge 0) allows the chart to be plotted correctly.

I hope this is useful.

[MMitsialis]

@bennyguk , this is very useful. I have encountered this in the past. I thought it related to not setting the reference valus for the x-axis.

I suggest put this forward as a push request for the project.

[bennyguk]

Hi @MMitsialis No problem. I'll do that ASAP.

Thanks.