Create a line plot without symbols

You can create a graph like the following example using data arranged in different layouts in the worksheet.

This line plot compares the chromatogram profiles for gasoline at various octanes.

To create a line plot without symbols, choose the layout option that is similar to your worksheet.

Option 1

Follow these steps if your worksheet contains a column of measurement data and two columns of categorical data for grouping.

Example worksheet

C1 C2 C3
Reading Compound Octane
0.213751 900 84.9
0.236162 920 84.9
0.211233 940 84.9
0.226918 980 84.9
... ... ...
  1. Choose Graph > Line Plot.
  2. Under Without Symbols, choose One Y, then click OK.
  3. Under Function, choose the function of the graph variable that you want to graph. In the example, Mean is the function.
  4. Under Graph variables, enter a column of numeric or date/time data. In the example, Reading is the graph variable.
  5. Under Categorical variable for X-scale grouping, enter a column of categorical data for the x-axis scale. In the example, Compound is the categorical variable for x-scale grouping.
  6. Under Categorical variable for legend grouping, enter a column of categorical data to be defined in the legend. In the example, Octane is the categorical for legend grouping.
  7. Click OK.

Option 2

Follow these steps if your worksheet contains multiple columns of measurement data and each column is a group, plus a column of categorical data for grouping.

Example worksheet

C1 C2 C3 C4 C37
900 920 940 ... Octane
0.213751 0.236162 0.211233 .... 84.9
0.221843 0.241514 0.216588 ... 84.9
0.220893 0.241153 0.215574 ... 91.7
... ... ... ... ...
  1. Choose Graph > Line Plot.
  2. Under Without Symbols, choose Multiple Y's, then click OK.
  3. Under Function, choose the function of the graph variable that you want to graph. In the example, Mean is the function.
  4. Under Graph variables, enter multiple columns of numeric or date/time data. In the example, 900 through 1600 are the graph variables.
  5. Under Categorical variable for grouping, enter a column of categorical data. In the example, Octane is the categorical variable for grouping.
  6. Click OK.

Option 3

Follow these steps if your worksheet contains multiple columns of summarized data. You can have a corresponding column of row labels (optional).

Example worksheet

C1 C2 C3 C4 C37
900 920 940 ... Octane
0.213751 0.236162 0.211233 .... 84.9
0.221843 0.241514 0.216588 ... 91.2
0.220893 0.241153 0.215574 ... 91.7
... ... ... ... ...
  1. Choose Graph > Line Plot.
  2. Under Without Symbols, choose Series in Rows or Columns, then click OK.
  3. Under Graph variables, enter multiple columns of summarized numeric or date/time data. In the example, 900 through 1600 are the graph variables.
  4. Under Label column (optional), enter a column of categorical values that corresponds to the rows. In the example, Octane is the label column. If you don't enter a label column, Minitab uses the row numbers as labels.
  5. Under Series Arrangement, choose the arrangement to graph. In the example, Each row forms a series is the arrangement. The series that you choose (row or column) appears in the graph legend, and the other appears as the X-scale label.
  6. Click OK.
By using this site you agree to the use of cookies for analytics and personalized content.  Read our policy