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Patryk H.

@esafeguard

4.7
24

5.5

5.5

97%

Web Development / On-Page SEO / Programming

$20 USD / Hour

・

Flag of

Poland (6:45 AM)

・

Joined on March 11, 2010

$20 USD / Hour

・

I'm a freelance web developer, SEO expert (on site optimization), website administrator and programmer. I can issue EU invoices. I know PHP and JavaScript. I have worked on securing, maintaining and plugin/theme development for WordPress websites on Linux servers. I have experience in creating interactive maps, charts and flowcharts in JavaScript.

Verifications

On time

93%

On budget

100%

Accept rate

66%

Repeat hire rate

13%

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Portfolio

Portfolio

229368
In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

582839
Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

201312
The project consisted of a improvement of a D3 chart wrapper. I added the support for multiple line charts, multiple axis (left and right y-axis), a selector for zooming the chart and the background chart highlights for indicating important data selections. I also fixed some errors in the OOP design of the D3 wrapper.

D3 Line Chart

1267269
Created in JavaScript/D3. Each colour represents a frequency of visits for a given data.

A Heatmap Chart

566690
An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

391305
A flowchart/graph, showing organization relationships, created in JavaScript/HTML/CSS. The data is read from a configuration file which can be modified. The graph items colours and connection types are configurable. The project design was provided by the client.

Flowcharts and website graphs

229368
In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

In this case this is a charting application, but any complex application that retrieves data from a database is possible. The communication with the database uses AJAX, so it works without refreshing the page. After retrieving the data, it can be presented in unlimited kinds of ways, and with JavaScript/AJAX the application can be interactive. The charts show daily (detailed) and monthly (sampled) charts. The sampled chart type is called candlestick chart.

PHP & JavaScript/AJAX Applications

582839
Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

Original designs with code compliant to standards and optimized for SEO and mobile devices.

Web Design

201312
The project consisted of a improvement of a D3 chart wrapper. I added the support for multiple line charts, multiple axis (left and right y-axis), a selector for zooming the chart and the background chart highlights for indicating important data selections. I also fixed some errors in the OOP design of the D3 wrapper.

D3 Line Chart

1267269
Created in JavaScript/D3. Each colour represents a frequency of visits for a given data.

A Heatmap Chart

566690
An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

An interactive map in JavaScript. Hovering or clicking on the counties can trigger various events - popups, colour change etc. The map can be configured with a simple XML, CSV, database. An administration panel with login can be also created.

USA State and County Map

391305
A flowchart/graph, showing organization relationships, created in JavaScript/HTML/CSS. The data is read from a configuration file which can be modified. The graph items colours and connection types are configurable. The project design was provided by the client.

Flowcharts and website graphs

4.7 · 24 Reviews
24 Reviews
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Sean L.

5.0

$15 USD

11 years ago

English to Polish Translaiton

Prompt and accurate translations! Highly recommended!

Translation
Polish Translator
English (US) Translator

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T
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Tyler C.

4.0

$750 USD

12 years ago

Use the D3 library to recreate a \\\"Stock Chart\\\"

esafeguard provided frequent updates and timely communication. The code delivered was of high quality; he is very knowledgeable with respect to D3.

JavaScript

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J

Former Client (inactive)

4.4

$450 USD

12 years ago

Modification to Visit Heat Map View and New Demographic View (archived)

Very good work.

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Adam K.

4.8

zł214 PLN

12 years ago

PL --> ENG, Tłumaczenie [e-book]: 1900 znaków

Great communication. Fast and complete work!

Translation
English (US) Translator

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J

Former Client (inactive)

5.0

$310 USD

12 years ago

D3/Javascript Data Visualization (archived)

This developer followed the spec and was also creative enough to understand where there may have been gaps in the spec. The work was well coded and matched my vision of what the new feature would be like.

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