my ideas on how to proceed

I need to clean up the UI and make it easier extendible.

plan.txt

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+We want to support many different plot types with many different 
+ways to define what and how it should be plotted. There is a high 
+overlap of settings that can be used for each plot type.
+
+Here is an attempt to group everything.
+
+Presentation
+* subplots (n x m)
+* single plot
+* gallery
+* table
+* p-values / ANOVA / Chi-Square
+
+Plot Types
+* x-y relation
+** Scatter
+** Bubble (?)
+* x-y relation for high number of points
+** contour 
+** 2d bins
+** hex bins
+* distributions: only one can be drawn
+** histogram (bar) (?)
+** density plot (filled) (?)
+* distributions: many can be drawn
+** histogram (line)
+** density plot (line)
+** cumulative distribution
+** quantile-quantile plot (?)
+** boxplots
+** violins
+** strip charts / sina plots 
+** overlapping densities (?)
+** ridgeline plots
+* proportions
+** pie chart 
+** bars (horizontal / vertical / stacked)
+* custom
+** parallel requests 
+
+
+Filters
+* query
+* group by
+** field
+** intervals (1m, 5m, 15m, 1h, ...)
+* split by
+* limit
+* date ranges (1...n)
+
+Axis
+* log/linear
+* y-range
+
+options
+* error bars
+* trend lines (cubic splines, B-splines, thin-plate splines, Gaussian process splines)
+
+Metrics
+* min/max
+* count
+* average
+* percentiles (median, 90-percentile, ...)
+
+
+Format 
+* color palette
+* highlight selected lines 
+
+
+The presentation defines how many plots you can define. It also influences some of 
+the available filters. E.g. the gallery requires to define a 'split by' field. 
+Each plot type defines which subset of filters, axis definitions, decorations and 
+metrics is available. It also defines which plot types are available for the X2 axis.
+For example, you cannot combine a pie chart with a scatter plot.
+
+Plots in more detail
+Scatter
+	x: time
+	y: duration
+	filters (required): query, date range
+	filters (optional): group by, limit, intervals
+	filters (forbidden):
+	axis: log/linear, y-range
+	options: trend lines
+	metrics: min/max, count, average, percentiles
+	combine: contour
+	X2-axis: cumulative distribution, histogram (line), density plot (line), Parallel Requests
+
+Cumulative Distribution:
+	x: percent
+	y: duration
+	filters (required): query, date range
+	filters (optional): group by, limit, intervals
+	filters (forbidden):
+	axis: log/linear, y-range
+	options: 
+	metrics: min/max, count, average, percentiles
+	combine: 
+	X2-axis: scatter, Parallel Requests
+	
+Contour:
+	x: time
+	y: duration
+	filters (required): query, date range
+	filters (optional): intervals
+	filters (forbidden): group by, limit
+	options:
+	combine: scatter
+	X2:axis: 
+	
+	
+Parallel Requests:
+	x: time
+	y: count
+	filters (required): query, date range
+	filters (optional): 
+	filters (forbidden): group by, limit, intervals
+	axis: log/linear, y-range
+	options: 
+	metrics: min/max, average
+	combine: 
+	X2-axis: scatter, cumulative distribution, 
+
+
+Violin:
+	x: group
+	y: duration
+	filters (required): query, date range, group by, limit, intervals
+	filters (optional): 
+	filters (forbidden):  
+	axis: log/linear, y-range
+	decorations: 
+	options: 
+	combine: strip charts
+	
+bar chart:
+	x: group
+	y: metric
+	filters (required): query, date range, group by, limit, intervals
+	filters (optional): 
+	filters (forbidden):
+	axis: log/linear, y-range
+	decorations: 
+	options: 
+	combine: 
+
+
+
+
+
+
+
+
+
+
+
+
+Use Cases:
+* Find slow requests
+* Find requests with unusually slow requests.
+** max value > x
+** 95-percentile/90-percentile > x
+** num values > x
+* How many requests were active at some point in time?
+* Understand the distribution of response times.
+* Identify locking issues.
+* Find regressions.
+