User's guide of Proceessing Modflow 5.0

Processing Modflow 209
color of each curve is given in the Color column. Click on a colored cell of the table to
change the color. Note that if you have deactivated a borehole in the Boreholes and
Observations dialog box, the corresponding row of the table is dimmed and its settings
cannot be changed.
- X-Axis (Time): Min. Time and Max. Time define a range of simulation time for which the
curves should be displayed. The number of desired ticks is given in the edit field Ticks.
- Y-Axis: Min. Value and Max. Value specify the minimum Y-axis value and maximum Y-
axis value on the graph. The number of desired ticks is given in the edit field Ticks.
- Data Types: Check the Calculated or Observation box to display the curves based on the
computed or observed data. The graph viewer uses solid lines for displaying calculated
curves. Observation curves are dashed.
- Options: Check the Draw Horizontal Grid or Draw Vertical Grid box to display the
reference grids on the graph. If Auto Adjust Min/Max is checked, the graph viewer uses
the minimum and maximum simulation times and values from the simulation result.
- Graph Style: You can display the time axis (X-axis) either on a linear or logarithmic scale.
- Save Plot As: Use this button to save the graph in Windows bitmap format.
- Data »: Click this button to display the Value Tables dialog box (Fig. 5.10) showing the
observed and calculated values at active boreholes. You can save the calculated values in
an ASCII data file or in the Observation file format (see Appendix 2 for the format) by
clicking the Save As... button. Data saved in the Obervation file format can be imported into
the Observation table of the Boreholes and Observations dialog box (see section 3.5).
- Scatter Diagramm »: Click the button to display the Scatter diagram dialog box (Fig.
5.11). Scatter diagrams are often used to present the quality of calibration results. The
observed values are plotted on one axis against the corresponding calculated values on the
other. If there is exact agreement between measurement and simulation, all points lie on a
45° line. The narrower the area of scatter around this line, the better is the match.
Note that a borehole will be displayed and used for calculating the variance (between
observed and calculated values) only when the corresponding Plot flag in the Borehole
table is checked. You can edit the text on the scatter diagram by clicking the mouse on the
desired text. Clicking on the Save Plot As, you can save the plot in the Windows BMP
format. The other options are self-explanatory.
5.6 The Graph Viewer