How to show "Lines and Curves" in a log scale plot.
Article ID: KB0083634
Updated On:
| Products | Versions |
|---|---|
| Spotfire Analyst | All Versions |
Description
Analysis file contains a line chart that includes a “Lines & Curves” line based on “Line from column values”. On the line chart, the Y-axis is changed to to use a log scale. Once this change is made, the “Line from column values” disappears.
Symptoms:
Changing the Line Chart to use a log scale on the Y-axis will cause the “Line from column values” to disappear.
Cause:
The main line chart and the “Line from column values” are using different scales.
Symptoms:
Changing the Line Chart to use a log scale on the Y-axis will cause the “Line from column values” to disappear.
Cause:
The main line chart and the “Line from column values” are using different scales.
Issue/Introduction
How to show "Lines and Curves" in a log scale plot.
Resolution
Create a new calculated column that uses the same column as the Y-axis value using the function Log10() .
Custom expression:
Log10([column_value])
Then use the new calculated column in the “Line from column values” feature. This will add the line back under the log scale.
Custom expression:
Log10([column_value])
Then use the new calculated column in the “Line from column values” feature. This will add the line back under the log scale.
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