Ranges

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Ranges

Data irregularities may be present in data imported from files.  These are typically related to rod changes, but may also represent data transmission errors:

CPT_Sounding_Spike

Ranges can be applied to data with an action that determines what operation is performed on the data in the range:

CPT_Sounding_Ranges

•Average - averages values between the start and end of the range (default setting)

•Delete - sets data in the range to -888

•Maintain - uses the original data without deleting the range

Ranges can be created manually or using filters.

Manual

Ranges can be added by defining a start and end depth on the qc chart by double-clicking.

hmtoggle_arrow1How To: Create ranges during import

img_1 Double-click on the start depth:

CPT_Zone_Manual_Start

img_2 Double-click on the end depth:

CPT_Zone_Manual_End

noteNote

If the new range intersects with one of more existing ranges, these will be replaced with the new range.

Filters

Four filter methods can be used to automatically create ranges based on test data:

•Constant Increment - creates ranges at constant intervals, in the absence of time stamp or flag data without the sensitivity of the tip variance filter

•Tip Variance - creates ranges based on changes in tip data that fall outside an accepted variance ratio

•Time Stamp - creates ranges based on gaps in time stamp data, indicating possible pauses in the push

•Flag - creates ranges using a specific flag value

hs-tip

Filters can be run during import.

hmtoggle_arrow1How To: Using the constant interval filter

img_1 Click the Constant Variance button:

CPT_Tools_ConstantFilter_Button

img_2 Enter the Start Depth, Interval and Thickness, then click the OK button:

CPT_Tools_ConstantFilter_Dialog

Start Depth - sets the depth to start creating ranges.

Interval - sets the value that is used to increment the creation of ranges.

Thickness - sets the thickness of the range.

hmtoggle_arrow1How To: Using the tip variance filter

img_1 Click the Tip Variance button:

CPT_Tools_VarianceFilter_Button

img_2 Enter the Minimum Value, Variance Ratio and Records, then click the OK button:

CPT_Tools_VarianceFilter_Dialog

Minimum Value - sets a value below which the check is not performed.

Variance Ratio - the difference between adjacent values.

Records - sets the number of records included in the range.

Examples

•if the current value is 10 MPa the next value cannot be less than 9 MPa or greater than 11 MPa.  

•if the current value is less 1 MPa, the check is not performed.

hmtoggle_arrow1How To: Using the timestamp filter

img_1 Click the Time Stamp button:

CPT_Tools_TimeFilter_Button

img_2 Enter the Difference and Records, then click the OK button:

CPT_Tools_TimeFilter_Dialog

Difference - sets a value that is used to infer a pause in penetration.

Records - sets the number of records included in the range.

hmtoggle_arrow1How To: Using the flag filter

img_1 Click the Time Stamp button:

CPT_Tools_FlagFilter_Button

img_2 Enter the Column, Value and Records, then click the OK button:

CPT_Tools_TimeFilter_Dialog

Column - sets the column to search.

Value - sets the value to search for.

Records - sets the number of records included in the range.

hmtoggle_arrow1How To: Delete one or more ranges

img_1 Select the Range to delete in the grid:

CPT_Sounding_Ranges_Delete

img_2 Right-click the grid to show the contextual menu:

CPT_Sounding_Ranges_Menu

img_3 Click Delete (or Delete All to removal all Ranges).