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On this page we will try to answer the remaining questions, we were not yet able to answer on the HowTo page. Please let us know in case we forgot something to explain. Our contact information can be found on the CubeViz Project Page.
This behavior can have various reasons. On the one hand it is possible that there is no data available according to the selection. In order to reduce the load of the server we decided not to check the availability of data for every selection. On the other hand it is possible that a chart can not be produced if the user selects inapplicable combinations of options such as a logarithm scale in combination with percentage stacking. Trapping such cases is not yet fully implemented but will be done soon.
To solve such problems we suggest to change the selection and/or the selected chart options.
Q2: Why do values of observations sometimes have so much digits after the decimal point. Doesn’t it fit to use only four or five digits?
We use the data as it is represented in the DataCube. We do not want to manipulate anything on the data site. In some domains much digits after the decimal point could be very interesting. CubeViz is a generic tool and we do not know anything about the domain represented in the Cube. We only know the vocabulary which is used to represent statistics.
Q3: Sometimes I am able to create a pie-chart and sometimes I am not. Why am I not able to always generate the same chart?
CubeViz contain an algorithm to analyze the selection of data in order to offer suitable charts. Some of the charts are an unsuitable or impossible choice for the respective data selection. The pie-chart, for instance, is only available if the user selects multiple elements only from one dimension. The amount of elements from all other dimensions must exactly one.
DataCube is still under development, which means that we do not support that feature at the moment, but it will come soon. DataCubes that contain slices should be able to browse with CubeViz. It is only not possible to filter in such a fine-grained way.
The current version of CubeViz do not support that feature. The user is only able to make a single selection of Datasets. But we are working on getting this feature being an integral part of CubeViz in the near future.
Sometimes the browser session is lost. Maybe you didn’t make an action for a long time. To get CubeViz running again, please reload CubeViz in the browser (In most browsers you only have to press F5 or Ctrl+R). If you do not want to loose your data selection, please use the Permalink for the reload.
This behavior can have multiple reasons. On specific timespans you are not the only user who is visiting our web sites. That can lead to a high load on the server and users have to share processing times. An other reason could be that you made an inadequate selection. If you select to much data items the server respond with a huge set of information which have to be transfered and processed by your browser. In such a case we suggest to deselect some of the items. Note that a chart will be not be well-arranged if to much information is included.
In addition to the chart visualizations it should be possible to obtain the raw data. On the basis of this visualization type you are able to follow the links to the respective original data source. Note that these links are outgoing links.
CubeViz provide an algorithm to generate colors in a deterministic way on the basis of identifiers of the underlying data items. This enables users to re-identify data items over different selections and charts. In case that we do not know anything about the domain of the data we are not able to create fix mappings between colors and the elements to be visualized. The result out of that algorithm is not always perfect, but without any color collapses.