https://bugs.kde.org/show_bug.cgi?id=498982
Bug ID: 498982
Summary: When importing a CSV file, columns can get erroneously
converted to int if they start with a long string of
zeroes, leading to data loss.
Classification: Applications
Product: LabPlot2
Version: latest
Platform: Flatpak
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: frontend
Assignee: alexander.se...@web.de
Reporter: realkpa...@gmail.com
Target Milestone: ---
SUMMARY
When importing a CSV file, columns can get erroneously converted to int if they
start with a long string of whole number entries, leading to data loss.
STEPS TO REPRODUCE
1. create a CSV file. One of the columns has "0" in it for the first 2000
lines, followed by 2000 lines containing "0.3".
2. import the CSV into LabPlot2
OBSERVED RESULT
The column that starts with a long list of "0" is imported as an "Integer",
which rounds all its entries to a whole number. Since the rest of the column
contains values smaller than 1, all entries are lost.
EXPECTED RESULT
Option 1: The software detects the non-zero entries and selects a Double
datatype.
Option 2: The user can override the automatic assignment of "Integer" in the
custom filter options.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 41, using LabPlot2 from Flathub
ADDITIONAL INFORMATION
There is workaround for this issue: using a text editor, change the "0" in the
first data row to "0.0".
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