I assumed that JMP was smoothing out the drought curve by taking an average of the eight index values for every year, then using that number in the graph construction but I haven't been able to find any literature that can tell me this for certain. There are eight separate drought index values per year, every year, for each drought index, and only one value per year for the corn yield data. My problem is that I have no idea how JMP is processing the drought data. Both are smooth curves and visually line up and seem to have a relationship. I built two side-by-side graphs in JMP, with one showing corn yield data over the 30 year period and the other showing drought data from one particular index over the same time period. The corn yield data contains one number (bushels/acre) for every year from 1981 to 2011. (See Add Graphics in the JMP Platforms chapter. Drag and drop the graph or graphic from another window to the journal. JMP places the graphic at the end of the journal. The drought data contains monthly drought index values for March-September for every year from 1981 to 2011. Do one of the following: Copy a graph from within JMP or a graphic from another application and then select Edit > Paste. I have drought data for seven different indeces and each index ranges from -6 (severe drought) to +6 (extremely high precipitation). The line style and color can be changed in the Worksheet line properties section.I am using JMP to find a relationship between drought index values and yearly corn yields for a 30 year period.
JMP GRAPH BUILDER ADD HORIZONTAL LINE FULL
The line now extends the full length of the parallel axis. For vertical lines, this is the column created in step 3. For horizontal lines, this is the column created in step 2. Click in the Variable field and select the appropriate column.Click in the Worksheet field and select the worksheet file that was saved in step 4.Click the + next to the Worksheet Grid Line section.
Check the box in the Worksheet grid lines field. Click the + next to the Grid Line Properties section, if needed. In the Property Manager, click on the Line tab. For a vertical line, click on the X Axis to select it. For a horizontal line, click on the Y Axis to select it. In another column, enter the X value for each vertical line. In one column, enter the Y value for each horizontal line. Click on the existing worksheet or create a new worksheet. To draw lines of constant value using the axis grid lines: It may also be easier if the axis limits will change. The line style and color can be changed on the Line tab in the Property Manager.Īxis grid lines may be easier to use if you have many horizontal or vertical lines that you want to display. The line now extends the full length of the plot at the specified value. For a vertical line, this should be the Y minimum value. For a horizontal line, this should be the X minimum value. Highlight the zero in the First value field and enter the axis minimum value. For a vertical line, this should be the Y maximum value. For a horizontal line, this should be the X maximum value. Highlight the value 12 in the Last value field and enter the axis maximum value. In the Property Manager, click the Data Limits tab. 
For instance, you might type 400, if you want the line displayed at X=400. By selecting the Row Order checkbox under the Line group box, the data points will then be connected as they are sorted in the data table. Initially the points are connected in the order of increasing X as shown in Figure 12.
Highlight the cos(Y) text in the X = F(Y) = field and enter the desired value for the vertical line. With the points plotted hold down the SHIFT key and select the line tool. Hence, I create linear regression lines and create regression reports. Then, I used 'Fit Special' command to generate a line where the slope is equal to 1. In JMP, I use the 'Fit Line' command to generate the R square table. For instance, you might type 30, if you want the line displayed at Y=30. I then send the graphs to a JMP report so all graphs will appear in just one window. For a horizontal line, highlight the cos(X) text in the Y = F(X) = field and enter the desired value for the horizontal line. In the Property Manager, click on the Plot tab. Click on the Function Plot in the Object Manager to select it. The plot is added using the default options. In the Choose Axes dialog, select the axes to use for the new constant value line and click OK. In the Select Plot Type dialog, select Y=F(X) Function Plot and click OK. Click the Home | Add to Graph | Plot command ( ). Click anywhere on the existing graph to select it. To add a line of constant value using a function plot, you can use these steps: The second is to add a grid line to an existing axis. There are two methods in Grapher to add a line of constant value to your graph.
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