Clear-sky GTI and Clearness index calculations require GTI configuration to be set in GTI parameters!
Time series
Basic data visualizations for multiple datasets/columns with various display options. The content of this section is distributed across the following tabs:
- Time Series. Time series graph of selected data. It is also possible to draw theoretical profiles for the parameters GHI, DNI and GTI.
- Heatmap. Heatmap plot of selected data. Maximum of (first) four selected columns is allowed.
- Histogram. Histogram plot.
- CDF. Cumulative distribution plot.
- Diurnal Profiles. Yearly/monthly diurnal profiles graph
- Monthly averages. Monthly averages graph
- Statistics. Table with basic statistics for each column.
Component | Description |
| Tabs | Move to different sections |
| Graph toolbar | Actions like zoom, pan, save as image and other settings |
| Main area | Part of the window where the graph or statistics are represented |
Column filter | Filter datasets or columns |
Data tree | Datasets shown in tree form. If checked, column data will be shown in plots. |
| Options | Additional options e.g. aggregations, filters. |
| Redraw | Redraw current graph with latest changes. |
Options
General
Component | Description |
Aggregation | Output time step. |
Min of valid points | Minimum required number of original records (in %) for summarizing the output interval. If this condition is not met (e.g., there are less than 30 1-minute records in hourly output interval, while we require 50% minimum), the output interval is empty - filled by NaN value. |
Year/Month | Filter data by year, month or year and month |
Date | Filter data by date and/or time |
Data column | If only one dataset is present, it's possible to filter data by range from any column of that dataset. If multiple datasets are present, it's possible to filter only by solar elevation. |
Period of day | Filter data by period of the day, similar to filter data by solar elevation |
Flags | If checked, data are filtered by flag values from flag column |
Valid | Check valid flags |
Select All | Check all flags |
| Deselect All | Deselect all flags |
Flag values | Dataset flags from dataset flag scheme |
Time series
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Show values | If checked and zoomed to less than 3 months of data, show the closest values near the cursor |
Compare mode | If checked, show data only with common timestamp |
Heatmap
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Histogram
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Start at | If checked, histogram starts at this value |
Number of bins | Set number of bins of the histogram |
Bin size | Set width of bins |
Compare mode | If checked, show data only with common timestamp |
CDF
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Percentile | Show horizontal percentage line with vertical value line in the graph |
Compare mode | If checked, show data only with common timestamp |
Diurnal profiles
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Monthly / yearly | Show monthly or yearly diurnal profiles graphs |
Mean / median | Show mean/median diurnal profile line |
PXX | Show percentile line |
Custom | Show custom percentile line |
Compare mode | If checked, show data only with common timestamp |
Monthly profiles
Component | Description |
View in time zone | If checked, data are shown in UTC chosen |
Compare mode | If checked, show data only with common timestamp |
Compare
Tool for visualizing and statistics of two columns over concurrent time period. This feature provides a set of plots and tools divided across these tabs:
- Scatterplot. Graphs of scatter plots, histogram and cumulative distribution graph.
- Monthly Scatterplot. Monthly scatterplot
- Time Series. Graphs of reference data, estimate data and differences between them
- Heatmap. Heatmap plot of reference data, estimate data and difference between them
- Analytical plot. Specific analytical graphs
Compare window has few default options when opened that can be changed. Double-clicking on graphs in the Scatterplot or Analytical plots tab will maximize the graph.
Component | Description |
Reference dataset | Reference dataset. |
Reference column | Reference column |
Estimate dataset | Estimate dataset |
Estimate column | Estimate column |
Text box | Basic text statistics for the current selection. |
Aggregation | Output time step. |
Min of valid points | Minimum required number of original records (in %) for summarizing the output interval. If this condition is not met (e.g., there are less than 30 1-minute records in hourly output interval, while we require 50% minimum), the output interval is empty - filled by NaN value. |
Year/Month | Filter data by year, month or year and month |
Date | Filter data by date and/or time |
Period of day | Filter data by period of the day, similar to filter data by solar elevation |
Sun elevation | Filter data by sun elevation |
Start at | If checked, histogram starts at this value |
Histogram - Bin size | Set width of bins |
Histogram- Number of bins | Set number of bins of histogram |
CDF- Number of bins | Set number of bins of CDF |
Lock heatmap | If checked, heatmap difference plot will not change the color scale range. |
Show monthly stats | If checked, statistics are shown in monthly graphs. |
Flags | If checked, filtering by flags is applied to columns. Flags can be chosen from the table of flags. |
Redraw | Redraw all graphs. |
Analyze
Analyze dialog provides an extended view of data in sets of specific graphs that focus on multiyear comparison and single-column visualization.
- Profiles. Yearly/monthly diurnal profiles graph
- Multiyear Analysis. Comparison of years as time series, maximum GHI/DNI/GTI, maximum daily ktm
- Kt Graphs. Set of graphs in Kt space. GHI, DNI and DIF columns need to be in the dataset in order to draw all graphs.
- Monthly Averages. Monthly averages graph
- Trends. Trend graphs with linear, polynomial or moving average trend line
Component | Description |
Dataset | Selected dataset for visualizations |
Column(s) | Selected column or set of columns for visualizations |
Options | Various options for each tab |
Aggregation | Output time step. |
Min of valid points | Minimum required number of original records (in %) for summarizing the output interval. If this condition is not met (e.g., there are less than 30 1-minute records in hourly output interval, while we require 50% minimum), the output interval is empty - filled by NaN value. |
Year/Month | Filter data by year, month or year and month |
Date | Filter data by date and/or time |
Data column | If only one dataset is present, it's possible to filter data by range from any column of that dataset. If multiple datasets are present, it's possible to filter only by solar elevation. |
Period of day | Filter data by period of the day, similar to filter data by solar elevation |
Flags | If checked, data are filtered by flag values from flag column |
Valid | Check valid flags |
All | Check all flags |
Flag values | Dataset flags from dataset flag scheme |
| Redraw | Redraw current graph with the latest changes. |
Options
Profiles
Component | Description |
monthly / yearly | Show monthly or yearly diurnal profiles graphs |
View in time zone | If checked, data are shown in UTC chosen |
mean / median | Show average/median diurnal profile line |
percentile | Show custom percentile line |
fill between | Fills area between custom percentiles |
Multiyear Analysis options
Component | Description |
h0 limit | Filter time steps where sun position are greater than h0 limit |
value limit | Filter time steps where column values are greater than h0 limit |
Ktm limit | Filter time steps where clearness index values are greater than Ktm limit |
Ktm std limit | Filter time steps where standard deviation of clearness index values are lower than Ktm std limit |
Kt Graphs options
Component | Description |
AOD lines | |
Sun elevation treshold | Filter time steps where column values are lower/greater than solar elevation limit |
Trends options
Component | Description |
Min of valid records for daily averages | Minimum required number of original records (in %) for summarizing the output interval. If this condition is not met (e.g., there are less than 30 1-minute records in hourly output interval, while we require 50% minimum), the output interval is empty - filled by NaN value. Used only when input is sub-hourly. |
Linear trend | Draw linear trend line |
Polynomial trend | Draw polynomial trend line of selected degree |
Smooth data | Use only full period for calculating polynomial and moving average trend lines |
Moving average | Draw moving average trend line with selected number of months |
Maintenance log
The maintenance log analysis tool shows the duration of periods between maintenance events and calculates basic statistics about the periods.
Component | Description |
Dataset | Name of the selected dataset. |
Column | Maintenance logs can be assigned to one of the columns. There you can choose the maintenance log filtered by column. |
Aggregate to | Aggregate multiple cleaning events from chosen period to one record. Multiple cleaning events can affect statistics. |
Statistics | Basic statistics about maintenance periods. |
Cancel | Closes the dialog window. |