From time to
time researchers have developed new sets of limits for specific
purposes. A recent example is the set of limits developed by John
Hesselberth and Ron Roy Stable Glaze Limits for C.6 & C.10
states "This set of limits is not a direct copy of any published
set, but rather an amalgam of
published sets and what we have learned from leaching studies. Others
may have slightly different views on these recommended limits; however,
we doubt anyone would argue that this is a "bad" set of
A new set of
limit such as these may be saved as a Matrix Limits file by entering
them into the Edit Limits Window (Fig.1).
To open the
Limits Chart Window click the
button or select the Limits Chart
item in the View menu.
Creating a new set of limits in the Edit Limits Window
display in this window is in a spreadsheet format allowing you to
edit the data. When the content of a cell has been highlighted the
right mouse button gives you the standard edit menu items.
When the window
is first opened it will display the currently chosen Limits Data
(default is Matrix.lim).
a New Set of Limits
the entry of a new set of limits click the Clear
Display button. This will clear all values from the spread
sheet ready for the entry of new data.
tables do not have data for every cone or temperature. e.g. the
Hesselberth and Roy limits mentioned above only pertain to Cone
6 and Cone 10. To enter these limits after clearing the table:
- locate the
column for C.6 and enter the minimum and maximum values for each
- locate the
column for C.10 and enter the minimum and maximum values for each
- enter a comment
in the text box provided
- click the
Save As button. The Windows
File Selector in the open directly in the Limits folder.
- type in a
new name for the limits data you have entered and click the Save
When you are
working in Matrix and wish to compare the formula for a displayed
recipe with the limits you have just entered you can use the Load
New Limits File item on the Action menu for whatever graph you are
using. This menu item opens a file selector window and the name
for the new limits data you have entered will appear in the list.
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