Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Selected Data About Geographic Locations

Selected Data About Geographic Locations

Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...

Latitudes and Departures

Latitudes and Departures

Latitudes and departures are essential concepts in surveying, providing a systematic way to analyze the projections of traverse lines. These projections allow surveyors to interpret a line's north-south and east-west components, which are crucial for precisely calculating areas, bearings, and lengths. Latitude is the north-south projection of a line, calculated as the product of the line's length and the cosine of its bearing. Departure, conversely, is the east-west projection obtained by...

Methods of Obtaining Topography

Methods of Obtaining Topography

Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...

Plotting of Topographic Maps

Plotting of Topographic Maps

Topographic maps represent the Earth's surface features using contour lines, which connect points of equal elevation to create a two-dimensional representation of three-dimensional terrain. Creating a topographic map requires a systematic approach.Begin by plotting a scaled grid and marking intersections corresponding to the survey's elevation data points. Assign elevation values at these intersections to build the base map. Next, determine contour levels using a consistent contour interval,...

Noncompartmental Analysis: Mean Residence Time

Noncompartmental Analysis: Mean Residence Time

According to statistical moment theory, mean residence time (MRT) is an important measure in pharmacokinetics. MRT can be defined as the expected mean of a probability density function distribution. It provides valuable insights into drug disposition in the body.
After the administration of a drug through intravenous bolus injection, the drug molecules are distributed throughout the body and remain there for varying periods. The MRT represents the average time these drug molecules stay in the...

Noncompartmental Analysis: Mean Transit, Absorption and Dissolution Time

Noncompartmental Analysis: Mean Transit, Absorption and Dissolution Time

When drugs are administered extravascularly, a comprehensive evaluation through noncompartmental analysis becomes imperative. This analytical approach considers various parameters that play a crucial role in understanding the pharmacokinetics of these drugs.
One of the key parameters is the mean transit time (MTT), which refers to the total duration required for drug molecules to transit through the body. MTT is determined by calculating the ratio of the area under the moment curve to the area...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Characterization of human airway-derived decellularized extracellulr matrix hydrogels and their effects on airway epithelial cell growth, organization and differentiation.

Biomaterials·2026

Same author

Recreating the Native Airway Microenvironment Using Tissue-Specific Extracellular Matrix Bioinks for Proximal Airway Engineering.

bioRxiv : the preprint server for biology·2026

Same author

20 years of Progress in Stem Cells, Cell Therapy, and Bioengineering in Lung Biology and Diseases.

American journal of respiratory cell and molecular biology·2026

Same author

Responsibility for Carbon Emissions in Supply Chains: Actions to Avoid Double-Counting and Under-Reporting.

Environmental management·2026

Same author

Progenitor Resilience and the Early Onset of Chronic Lung Diseases: NHLBI workshop report.

American journal of respiratory cell and molecular biology·2026

Same author

The burden of malaria-attributable maternal anaemia and the impact of preventive treatment across sub-Saharan Africa.

Nature health·2026

Search research articles

Related Experiment Video

Updated: Sep 13, 2025

Constructing and Visualizing Models using Mime-based Machine-learning Framework

Constructing and Visualizing Models using Mime-based Machine-learning Framework

Published on: July 22, 2025

traveltime: an R package to calculate travel time across a landscape from user-specified locations.

Gerard E Ryan^1,2, Nicholas Tierney^1,3, Nick Golding^1,4

¹The Kids Research Institute Australia, Nedlands, WA, 6009, Australia.

Gates Open Research

|July 28, 2025

Summary

The R software package "traveltime" maps travel durations across geographic areas. This tool helps analyze accessibility and optimize resource allocation for various applications, from public health to urban planning.

Keywords:

R geographic information systems spatial analysis

More Related Videos

An R-Based Landscape Validation of a Competing Risk Model

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Published on: February 25, 2013

Related Experiment Videos

Last Updated: Sep 13, 2025

Constructing and Visualizing Models using Mime-based Machine-learning Framework

Constructing and Visualizing Models using Mime-based Machine-learning Framework

Published on: July 22, 2025

An R-Based Landscape Validation of a Competing Risk Model

An R-Based Landscape Validation of a Competing Risk Model

Published on: September 16, 2022

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Published on: February 25, 2013

Area of Science:

Geographic Information Systems (GIS)
Spatial Analysis
Environmental Science

Background:

Travel time analysis is crucial for urban planning, public health, and resource management.
Existing methods may lack accessibility or require specialized software.

Purpose of the Study:

To introduce the R software package 'traveltime' for generating travel time raster maps.
To provide a user-friendly tool for calculating travel times from specified locations.

Main Methods:

The 'traveltime' package in R processes geographic coordinates to create travel time maps.
It involves preparing a friction surface and calculating travel times to the nearest specified locations.

Main Results:

The software generates raster maps where each cell represents the minimum travel time in minutes to the nearest location.
The package facilitates diverse applications, including bias estimation and facility allocation.

Conclusions:

The 'traveltime' R package offers a versatile solution for spatial accessibility analysis.
Its applications span public health, urban planning, and logistical resource management.