On Tue, 7 Nov 2017, Werner Pamler via Lazarus wrote:
Am 07.11.2017 um 11:53 schrieb Michael Van Canneyt via Lazarus:
Are you going to make sure TAChart can do the plot during design-time ?
I am working at it, there are issues with registration of the new
TExpressionSeries from a separate package (it's not in trunk, yet).
But anyway: why is the designtime argument so important to you?
I am _very_ surprised by this question.
Because Lazarus is RAD, obviously ? No-code development ?
ExpressionPanel cannot plot a function as simple as "sin(x)" at
designtime because bcMath is not added to the Builtins of the parser.
And if it were, other similarly simple functions such as "tan(x)" would
not work because they are not registered. So, the designtime argument
has only very limited weight.
In your eyes, yes. In my eyes, this is _the_ argument:
TDataset has the possibility to show the data at design time.
In it's day, this was revolutionary, and still today - 20 years after the
introduction there are very little environments that can repeat this.
(in fact, I know of none)
The same applies for plotpanel.
If TAChart cannot show a series in designtime, then that is a huge
shortcoming in my eyes.
(Never having used TAChart, I don't know if it can or not,
this is a hypothetical statement)
But of course, there is always the
possibility that I am missing some features of the fpexprparser.
No, you are not missing it.
I see that I missed to commit a patch to plotpanel, because here sin(x) works.
I have too many unfinished patches in my source tree :/
Should I still commit it, or it is not necessary any more ?
Michael.
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